GLA - LHR

£55 Find Cheap Flights from Glasgow Airport to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Glasgow Intl to Heathrow departing on 26/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Glasgow to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Glasgow to London, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
£81
Typical prices: £177-£113
British Airways
Sat 23/5Tue 26/5
GLA - LHR • Direct
Cheapest one-way flight
£55
Typical prices: £70-£151
British Airways
Sat 26/9
GLA - LHR • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
BA's economy seats offer comfort with 79 cm pitch.
Use Glasgow's priority security for a smooth departure.
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Every day
You can fly direct with British Airways. Average duration is 1h 30m
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Most punctual • 90% on-time
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When to book
in advance
Our data shows that travellers who book at least 8 weeks in advance save around 24% compared to booking last minute.
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When to travel
Cheapest • 15% price drop
Most popular
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Flight Deals

Cheap Flights from Glasgow Intl to Heathrow (GLA-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Glasgow Intl to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Glasgow Intl to Heathrow

Sat, 23 May - Tue, 26 May
British Airways Logo
19:45 - 21:05
GLA
-
LHR
1h 20mdirect
British Airways Logo
20:15 - 21:35
LHR
-
GLA
1h 20mdirect
£81British Airways
Thu, 14 May - Thu, 14 May
British Airways Logo
11:25 - 12:55
GLA
-
LHR
1h 30mdirect
British Airways Logo
21:50 - 23:05
LHR
-
GLA
1h 15mdirect
£84British Airways
Thu, 21 May - Tue, 26 May
British Airways Logo
11:25 - 12:55
GLA
-
LHR
1h 30mdirect
British Airways Logo
20:15 - 21:35
LHR
-
GLA
1h 20mdirect
£84British Airways
Thu, 21 May - Sun, 24 May
British Airways Logo
12:40 - 14:10
GLA
-
LHR
1h 30mdirect
British Airways Logo
21:05 - 22:20
LHR
-
GLA
1h 15mdirect
£87British Airways
Fri, 22 May - Sun, 24 May
British Airways Logo
17:05 - 18:30
GLA
-
LHR
1h 25mdirect
British Airways Logo
22:15 - 23:30
LHR
-
GLA
1h 15mdirect
£91British Airways
Fri, 22 May - Mon, 25 May
British Airways Logo
14:40 - 16:10
GLA
-
LHR
1h 30mdirect
British Airways Logo
18:15 - 19:35
LHR
-
GLA
1h 20mdirect
£97British Airways
Mon, 25 May - Mon, 1 Jun
British Airways Logo
19:35 - 20:55
GLA
-
LHR
1h 20mdirect
British Airways Logo
21:05 - 22:25
LHR
-
GLA
1h 20mdirect
£98British Airways
Mon, 25 May - Fri, 5 Jun
British Airways Logo
19:35 - 20:55
GLA
-
LHR
1h 20mdirect
British Airways Logo
07:15 - 08:40
LHR
-
GLA
1h 25mdirect
£98British Airways
Sun, 24 May - Sun, 31 May
British Airways Logo
21:15 - 22:35
GLA
-
LHR
1h 20mdirect
British Airways Logo
21:05 - 22:20
LHR
-
GLA
1h 15mdirect
£100British Airways
Wed, 15 Jul - Fri, 24 Jul
British Airways Logo
20:50 - 22:10
GLA
-
LHR
1h 20mdirect
British Airways Logo
06:15 - 07:40
LHR
-
GLA
1h 25mdirect
£100British Airways
Booking Insights

KAYAK’s insights & trends for Glasgow Intl to Heathrow flights

Get data-powered insights and trends into flights from Glasgow Intl to Heathrow to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Glasgow Intl Airport to London Heathrow Airport?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Glasgow Intl Airport to London Heathrow Airport departing in May.

What’s the cheapest day of the week to fly from Glasgow Airport to London Heathrow Airport?

The average price of all round-trip flights from Glasgow Intl Airport to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to London Heathrow Airport on a Friday and more expensive on a Sunday. On your return trip to Glasgow Airport, you should consider flying back on a Saturday, and avoid Sundays for better deals.

What is the cheapest month to fly from Glasgow Intl Airport to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Glasgow Intl Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Glasgow Intl Airport to London Heathrow Airport is February, where tickets cost £110 (return) on average. On the other hand, the most expensive months are June and August, where the average cost of round-trip tickets is £168 and £142 respectively.

How far in advance should I book a flight from Glasgow Intl Airport to London Heathrow Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Glasgow Intl Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Glasgow Intl Airport to London Heathrow Airport, you should book around 8 weeks before departure, which saves you about 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Expert advice

Expert advice for your flight from Glasgow Intl to Heathrow

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Kirstie Pickering

Kirstie Pickering

Expert on LHR and GLA

Aviation and business journalist Kirstie didn’t leave England until she was 18 years old, but has since travelled to over 20 countries including Japan, Canada, and Iceland. Her travel expertise lies in European city breaks, including how to find the best locally-owned hotels and restaurants and how to optimise the airport experience for your needs.

Good to know - Cheap tickets from Glasgow Airport to London Heathrow Airport

Low seasonFebruary
Cheapest flight£55
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly (10% more expensive on average)
Flight from Glasgow Airport to London Heathrow Airport

When to book flights from Glasgow Intl to Heathrow

Are your dates flexible? Find out the best times to travel from Glasgow Intl to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Glasgow Airport to London Heathrow Airport flights

  • Is there public transport from Glasgow Central to Glasgow International Airport?

    First Glasgow operates the Glasgow Airport Express Service 500, the official bus that connects Glasgow Central to Glasgow International Airport in just under 15min. Glasgow Airport Express Service 500 operates 24h daily throughout the year, except on Christmas Day.

  • Are there services and facilities for disabled passengers at Glasgow International Airport?

    Glasgow International Airport has well-equipped parking lot for disabled travellers. The airport can arrange for special assistance in advance by calling on the airport's Special Assistance Office. Glasgow International Airport collaborates with various airlines to assist passengers for free and ensure their journey is less stressful.

  • Is there public transport from London Heathrow to downtown London?

    There are four transfer options from Heathrow Airport to central London, namely buses, Underground, train, and taxi. A one-way Heathrow Express ticket costs around £22, and the journey to Paddington Station in London takes about 15min. Heathrow Shuttles offer a lower door-to-door transfer option from the airport to various resorts in central London. All prices are fixed, and passengers don’t incur extra waiting times and luggage costs.

  • Where can you take a shower at London Heathrow?

    London Heathrow Airport has five lounges, where passengers can take a shower after a flight from Glasgow International Airport. The Elemis Travel Spa, formally known as British Airways Arrivals Lounge, offers shower facilities at the Arrivals Area, on the public side. The airport also offers unisex wheelchair-accessible shower and toilet facilities.

  • Are there cell phone charging areas at London Heathrow?

    London Heathrow ranks as the world’s most mobile-friendly airport. No airport matches its charging capability. LHR has over 3,000 power sockets evenly distributed throughout the terminals to make it easier and less stressful for local and international travellers to charge their devices. There is one charging socket for every two passengers at London Heathrow Airport.

  • Does Glasgow Airport has charging areas?

    Glasgow International Airport offers free mobile charging machines with adaptors for most phones. The designated charging areas is located at Dixons airside. Passengers can also charge their devices at any of the Surfbox internet stations in the Main Departure Lounge 4 Station. Alternatively, charge your device at outlets found around the airport.

  • Are there any left-luggage facilities available at London Heathrow Airport?

    If you find yourself in need of temporary storage for your luggage at London Heathrow, you can utilise the Left Luggage services available in all terminals of the airport. The cost for storing your baggage for a day is £22.50, and you have the option to make the payment when you collect your belongings.

  • Which flights can reduce my carbon footprint when flying from Glasgow to London Heathrow?

    If you want to reduce your carbon emissions when flying from Glasgow Airport (GLA) to London Heathrow (LHR), you can fly directly with British Airways reducing your carbon footprint by 74%. Alternatively, you can also fly with Aer Lingus with a stopover at Dublin Airport (DUB), reducing carbon emissions by 76%.

  • Which are the most cost-effective car parks at Glasgow Airport?

    For the most affordable rate, the Long-Stay Car Park at Glasgow Airport is the best option. For a 7-day period, the charges will come to roughly £110; much cheaper than comparing the other two car parks such as the Fast Track parking for £260 or the Short-Stay Car Park for around £315 for the same period. The Long-Stay Car Park has a free 5-minute shuttle bus to the terminal.

  • Where can I find car hire at London Heathrow Airport?

    Upon exiting the Baggage Reclaim area, you can locate the car hire desks in the Arrivals Hall of Terminals 2, 3, 4 & 5. You will find well-known car hire agencies such as Hertz, Alamo, Enterprise and Budget, amongst others. Shuttle buses can take you from the terminals to the car rental collection areas.

  • What is the cheapest flight from Glasgow Intl Airport to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Glasgow Intl Airport to London Heathrow Airport was £55 for a one-way ticket and £81 for a return.

  • Which airports will I be using when flying from Glasgow Airport to London Heathrow Airport?

    When flying out of Glasgow Airport you will be using Glasgow Intl. You will be landing at London Heathrow Airport, also known as London Heathrow.

  • Which aircraft models fly most regularly from Glasgow Airport to London Heathrow Airport?

    The Airbus A320-100/200 is the aircraft model that flies most regularly on the Glasgow Airport to London Heathrow Airport flight route.

  • Which airline alliances offer flights from Glasgow Airport to London Heathrow Airport?

    SkyTeam, and oneworld are the airline alliances operating flights between Glasgow Airport and London Heathrow Airport, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Glasgow Airport to London Heathrow Airport?

    There are direct flights from Glasgow Airport to London Heathrow Airport on a daily basis.

  • Which is the best airline for flights from Glasgow to London, KLM or easyJet?

    The two airlines most popular with KAYAK users for flights from Glasgow to London are KLM and easyJet. With an average price for the route of £217 and an overall rating of 7.8, KLM is the most popular choice. easyJet is also a great choice for the route, with an average price of £82 and an overall rating of 6.9.

  • How does KAYAK find such low prices on flights from Glasgow Airport to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Glasgow Airport to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Glasgow Airport to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Glasgow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Glasgow Airport to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to Glasgow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Glasgow Airport to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Glasgow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Glasgow Intl Airport to London Heathrow Airport

  • Looking for a cheap flight from London Heathrow Airport to Glasgow Airport? 25% of our users found flights on this route for £133 or less one-way and £269 or less round-trip.
  • There are plenty of fast, direct and non-stop flights from Glasgow International Airport (GLA) to London Heathrow (LHR). British Airways is the main carrier between Glasgow International Airport and London Heathrow.
  • The free Wi-Fi access at Glasgow International Airport lasts for up to 60min. However, passengers who wish to continue to access the internet beyond the free session can pay for an extra block of 180min at around £5.
  • London Heathrow Airport has approved pet relief areas in all terminals, including the Arrival Terminal. However, passengers planning to fly with their pets must first register with the Pet Travel Scheme to be allowed into London Heathrow.
  • Banking and ATM services are available at London Heathrow. Cash machines and ATMs are located post-security at the Departure Lounge.
  • Glasgow Airport offers a Left Luggage Facility, where passengers can store their bags for up to 3 months. The Left Baggage Office is located in the Check-in Hall. It costs around £8.50 to store a standard size item for up to 3h at Glasgow Airport, or around £12.50 for the entire day.
  • Glasgow Airport has coin-operated photo booths where you can take quick photos ahead of your flight. One photo booth is located near Car Park 2, while the rest are just before the Security Screening area.
  • Water fountains, supermarkets, and eateries are available at Glasgow Airport. Marks and Spencer, located after Baggage Claim, is perfect for shopping for any last-minute snacks ahead of a flight. The Tesco Supermarket, located near the entrance of the Main Terminal, offers a range of snacks or groceries that you may need ahead of a flight.
  • At Glasgow Airport (GLA), you can bypass the security lines by booking Priority Security for around £7 online. Passengers who have reserved Priority, will receive preferential treatment, allowing them to skip ahead of the general queue.
  • If you fancy putting your feet up before your flight, why not check out the comfortable Airport Lounges available at Glasgow Airport? You can pre-book the UpperDeck Lounge for around £29 per person or the Lomond Lounge for about £35 per person.

Prefer to fly direct from Glasgow Airport to London Heathrow Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Glasgow Intl to London Heathrow.
Find which airlines fly direct from Glasgow Intl Airport to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

Glasgow Intl to London Heathrow

Monday

British Airways

British Airways

Tuesday

British Airways

British Airways

Wednesday

British Airways

British Airways

Thursday

British Airways

British Airways

Friday

British Airways

British Airways

Saturday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Direct returns

London Heathrow to Glasgow Intl

Monday

British Airways

British Airways

Tuesday

British Airways

British Airways

Wednesday

British Airways

British Airways

Thursday

British Airways

British Airways

Friday

British Airways

British Airways

Saturday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Reviews of the top 3 airlines flying from Glasgow Intl to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Glasgow to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Glasgow Intl to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1508 reviews
7.8Boarding
7.3Food
7.7Comfort
8.4Crew
7.1Entertainment
Airline reviews

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

10.0 ExcellentDiane, Apr 2026
AMS - HUY
Read more KLM reviews

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

There were no charge points for phones on the economy seats. The seats were comfortable overall. Food was okay.. flight was on time

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Empty seats next to me - wish it had been for a longer flight!!

Terrible last row seats many seats available but no offer to move to better seat

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Good news was that Bag Check was open two and a half hours before the flight, which is essential with the chaotic immigration process. Flight was okay, but sitting at the back of the aircraft, 3 overhead bins on both sides were filled with crew bags and other misc items, so we couldn't put our cabin bags anywhere near us. To add insult, twice the crew managed to drop items that they were taking out of the overhead bins onto my wife's head, who was sitting in an aisle seat.

You need to make signage at Berlin Airport clearer. Having checked in online we had our boarding passes onlour phones. You do not make it clear that you need to check in again to receive a printed luggage tag. You get to baggage drop off and it says you can only do it with a luggage tag BUT not how to get this.

It was good except they could offer free water and tea/coffe

Sitting on the last row in between the aisle and a massive person, all people going to the bathroom bumped into me including the flight attendants.

Sat at rear of aircraft and was very cold. As a frequent flyer for many years, this is was the coldest I have ever been. Other passengers and some crew were complaining how cold it was. Sitting near the doors always risks being colder, just the way the aircraft works - but this was exceptional, bring a good jumper. Everything else was pretty standard easyJet - good value low cost carrier.

The best budget airline in Europe. Flight was on time, crew friendly and worked hard during flight and were able to meet our needs. Only downside (not the airline's fault), there were no rear steps.

It was transportation nothing more. I will give a positive rating over Ryanair. We missed our Ryanair flight the night before and received rude and unconcerned treatment from the Ryanair customer service. It was late. We were very tired and stressed after doing our best to get to the airport. The so called customer service ladies were completely unconcerned from the start. Aside from that, the flight to London seemed to be their opportunity for advertising. No time to relax as attendants were constantly in the aisle selling. I will never fly Ryanair again!!

Boarding and disembarking were smooth. Not offering free water was cheap ... I've never encountered that before on a flight.

Boarding could be better. To get through your gate but to be stood in a corridor for 20 minutes is not great.

The plane was postponed for over 2.5 hours, which meant that all four of us missed the check in time for our ongoing trip to Melbourne. We had to buy new tickets for 4 people as we had to forfeit the ones we had. The cost was really unfair. i understand that it was snowing during the first leg of the plane for that morning. Surely the cost could have been shared by the airline and not all by us. I could have bought insurance - but you can see how much I travel. I will need to chose more trustworthy airlines.

All crew except 1 were excellent. When I asked assistance with business class seat conversion to a bed (not being familiar as never used before but have numerous times with other airlines) crew member helped very reluctantly. I should have told her that business class seat conversion is totally different in each airline such as Delta, New Zealand Air and United. Sorry it was my 1st time with America Airlines. Now I know, I won't bother asking assistance in future.

I had a mixed experience on this flight. The plane itself was comfortable, the flight was smooth, and the entertainment selection was excellent with plenty of movie options. However, the service fell short. I had an entire row to myself and fell asleep with a blanket over me. A flight attendant, Karleigh, woke me up to see if I had my seatbelt on, which felt unnecessary given the situation. Meanwhile, trash sat uncollected on the tray at the end of the row and was never picked up. During the second meal service, no one woke me up, and when I used the call button multiple times, there was no response. I eventually had to walk to the back to ask for assistance. There was also a long stretch without snacks, and when I requested something savory, I was dropped off sweet options, which wasn’t ideal. Overall, while the flight itself was comfortable, the lack of attentiveness and responsiveness from the crew made the experience disappointing.

The seats in Premier Economy were very comfortable. The food was better than average. The way British Airways handled our seating was atrocious.

The flight attendant does not pay attention to my "call" button more than 3 times when I need a drink.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

British Airays fails to enforce its own guidelines regarding carry on size limits. There were MANY passengers with full suitcases stuffing them into the overhead compartments leaving no space for others, like me, who adhere to the posted sizes. I had to put my carryone bag into my foot space, in additon to my carryon personal item, leaving me cramped for a seven hour flight. I was in physical pain, and I attribute this entirely to staff unwilling to enforce limits. The infotainment system was horrible. the touchscreens did dot work correctly, and there was no information on system operation. I am 77 years old, and a lifelong movie-goer. I recognized ONE movie (and not much better TV shows). It seems that BA saves royalty money by limiting its move and TV selection to absolute rubbish. The FlightAware program is the worst informationsystm I have ever seen, it is completely worthless. I pay attention to the safety briefings...in the event of an emergency, one is supposed to assume the "brace" position, except the seats are so close together, front to back, that it is not possible to assume the position without striking the seat in front of you. at age 77, and a lifelong traveler, this is the worst flight experience I have ever had, and I will never fly British Airways again

Overall ok. Best part has always been the sundae dessert.

I’ve never been on a trans-Atlantic (or Pacific) flight where the seats don’t recline—not even a little. I asked my seat mate when BA starting doing this and he said “Oh, a few years ago.” I couldn’t sleep, with my head falling forward waking me continuously, and came off the plane incredibly stiff. I booked a Premium Economy seat to get a more comfortable seat, which was worse than most basic Economy seats I’ve ever booked.

Nice aircraft. Good crew. Delayed departure from Houston, but arrived on time in London. Main thing I don’t like about flying BA is having to transit through security in London Heathrow. A major pain!

Was upgraded to business class on this flight, I presume due to my premium economy class for my London to Denver flight. Business class was the same seats as economy, only the middle seat was unfilled. Decent lunch served, and the lounge experience in Prague was good. The only heads up I would give is give yourself enough time for gate carry-on luggage scanning, which I did not anticipate in my time planning.

Everything you need to know for your flight from Glasgow Intl to Heathrow

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