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$440+ Cheap flights from Glasgow Intl (GLA) to Washington

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap flight deals from Glasgow Intl to Washington

Cheapest flights from Glasgow Intl to Washington
Explore the most affordable flight options available from Glasgow Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:25 amGLA - PDX
2 stops15h 49mBritish Airways
Wed 1/75:45 pmPDX - GLA
1 stop12h 30mBritish Airways
Deal found 12/21$2,598
This Cheapflightsfares deal was found by Cheapflights users on 12/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2211:35 amGLA - PDX
2 stops19h 31mMultiple Airlines
Tue 12/2310:45 amPDX - GLA
2 stops15h 05mMultiple Airlines
Deal found 12/21$4,323

Find flight deals from Glasgow Intl to Washington

Keep the following information in mind while searching for Glasgow Intl to Washington flight deals. Data was last updated December 23, 2025.

Round-trip from

$550
(Gotogate)

One-way from

$440
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$991
From Glasgow Intl to Washington
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One-way flight from Glasgow Intl to Washington
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Highest demand for flights based on searches. 17% potential increase in price ($177 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Glasgow Intl to Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from Glasgow Intl Airport to Washington that are best for you.

Fly from

Glasgow Intl

Fly to

Washington

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 2/17

12:35 pm-5:00 pm

1 stop12h 25m

Seattle/Tacoma Intl

Sat 2/28

2:35 pm-9:55 am

1 stop11h 20m

$557

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 2/20

12:35 pm-5:00 pm

1 stop12h 25m

Seattle/Tacoma Intl

Mon 3/9

3:35 pm-9:55 am

1 stop11h 20m

$581

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 3/4

12:35 pm-5:00 pm

1 stop12h 25m

Seattle/Tacoma Intl

Sun 3/8

3:35 pm-9:55 am

1 stop11h 20m

$611

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 1/19

10:40 am-11:50 am

1 stop33h 10m

Seattle/Tacoma Intl

Mon 1/26

3:10 pm-10:10 pm

1 stop23h 00m

$651

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 1/19

10:40 am-11:50 am

1 stop33h 10m

Seattle/Tacoma Intl

Mon 1/26

8:00 am-9:55 am

2 stops17h 55m

$655

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 2/5

12:50 pm-8:57 pm

2 stops40h 07m

Seattle/Tacoma Intl

Thu 2/12

7:00 am-12:05 pm

2 stops21h 05m

$668

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 2/17

6:00 am-10:16 pm

2 stops24h 16m

Seattle/Tacoma Intl

Sat 2/28

8:10 am-11:10 pm

2 stops31h 00m

$668

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 2/20

6:05 am-11:40 am

1 stop13h 35m

Seattle/Tacoma Intl

Mon 3/9

1:45 pm-12:45 pm

2 stops16h 00m

$690

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 3/4

12:00 pm-6:20 pm

1 stop14h 20m

Seattle/Tacoma Intl

Sun 3/8

7:15 am-10:45 am

2 stops20h 30m

$691

GlasgowPortland

GLA - PDX

GLAPDX

Glasgow Intl

Thu 2/19

8:20 pm-3:55 pm

1 stop27h 35m

Portland

Mon 2/23

5:45 pm-2:30 pm

1 stop12h 45m

$851

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 21 results
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Best time to book a flight from Glasgow Intl to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Glasgow Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Glasgow Intl Airport to Washington

What is the cheapest month to book a flight from Glasgow Intl Airport to State of Washington?

Currently, March is the cheapest month in which you can book a flight from Glasgow Intl Airport to State of Washington (average of $484). Flying from Glasgow Intl Airport to State of Washington in December is currently the most expensive (average of $797). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated December 23, 2025.
Read reviews from past customers who have flown British Airways from Glasgow Intl Airport to Washington. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,605 reviews

Overall

6.7

Food

6.4

Entertainment

6.4

Comfort

6.7

Crew

7.6

Boarding

6.9

Reviews

1 / 20
6.0
Good

Roxanne,Sep 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.
British Airways
6.7
Okay
7,605 reviews
British Airways
6.7
Okay
7,605 reviews

Overall

6.7

Food

6.4

Entertainment

6.4

Comfort

6.7

Crew

7.6

Boarding

6.9

Reviews

1 / 20
6.0
Good

Roxanne,Sep 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

Related info for your journey

Find useful and relevant information for your journey from Glasgow Intl to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Glasgow Intl Airport to State of Washington?

    Airlines like Icelandair, KLM, and British Airways fly from Glasgow Intl Airport to State of Washington in about 12h 25m. The time it takes to get you to your destination can typically vary by up to 20h 45m. Airlines will cover a distance of 4445 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Glasgow Intl Airport to State of Washington one-way?

    The cheapest airlines for a one-way flight from Glasgow Intl Airport to State of Washington are Icelandair ($548), Aer Lingus ($605), and British Airways ($633).

  • Can I find deals for flights from Glasgow Intl to Washington that include hotel bookings?

    Yes. In addition to deals on Glasgow Intl to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Glasgow Intl to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Glasgow Intl to Washington.

  • Can I find deals for business class flights from Glasgow Intl to Washington?

    Yes. Cheapflights offers flight deals from Glasgow Intl to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Glasgow Intl Airport to State of Washington?

    Currently, March is the cheapest month in which you can book a flight from Glasgow Intl Airport to State of Washington (average of $484). Flying from Glasgow Intl Airport to State of Washington in December is currently the most expensive (average of $797). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Glasgow Intl to Washington

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Top airline flying from Glasgow Intl to Washington

Discover the top airline that operate flights from Glasgow Intl to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$421Average$916FlexibilityNo cancel feeOn-time70%

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