$336 Cheap Flights from Seattle (SEA) to Glasgow (GLA)

You can find cheap one-way flights from $336 and cheap return flights from $848 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Glasgow (GLA-Glasgow Intl.) with Expedia. One-way flights typically cost between $298 and $3816, and return flights often range between $806 and $11453. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Glasgow (GLA-Glasgow Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.

February is the cheapest month to fly from Seattle (SEA) to Glasgow (GLA), with average return fares around $730. This price is about 20% lower than the average fare throughout the year, as February often has lower travel demand. Other budget-friendly months to consider are April and October.*Averages based on flights available on Expedia in the last year.

KLM is one of the cheapest airlines offering connecting flights from Seattle - Tacoma Intl. (SEA) to Glasgow Intl. (GLA), with round-trip tickets starting from around $630. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.

When flying from Seattle (SEA) to Glasgow (GLA), February and October are your best bets. These months have average return flight prices around $730, which is quite reasonable for this route. February is less crowded, while October offers beautiful autumn scenery, making both months appealing for travelers looking for good deals and pleasant experiences.*Prices based on flights available on Expedia in the last year.

You can fly business class between SEA and GLA. Airlines that offer business class service on this route include:

• British Airways
• Icelandair
• Lufthansa
• United Airlines
• Air Canada
• Air France
• Delta Air Lines
• Aer Lingus
• American Airlines
• Condor

First class is available with United Airlines.

It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Glasgow (GLA-Glasgow Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.