$679+ Cheap flights from Seattle (SEA) to Luxembourg (LUX)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LUX
Sep 23 — Sep 301
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Seattle to Luxembourg with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Luxembourg
Cheapest
Best
Last-minute
Cheapest flights from Seattle to LuxembourgExplore the most affordable flight options available from Seattle to Luxembourg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 24, 2026.
Explore the most affordable flight options available from Seattle to Luxembourg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 24, 2026.
This Expedia deal was found by Cheapflights users on 8/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:45 pm -
1 stop17h 20m
Mon 12/79:55 pm -
1 stop22h 30m
Deal found 8/22![British Airways logo]()
$679
This Gotogate deal was found by Cheapflights users on 8/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:45 am -
2 stops41h 15m
Wed 12/96:50 am -
2 stops20h 32m
Deal found 8/21![Multiple Airlines logo]()
$680
This Gotogate deal was found by Cheapflights users on 8/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:45 am -
2 stops41h 15m
Tue 11/176:50 am -
2 stops24h 07m
Deal found 8/22![Multiple Airlines logo]()
$687
This Gotogate deal was found by Cheapflights users on 8/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:50 am -
2 stops18h 00m
Wed 10/146:25 am -
2 stops16h 57m
Deal found 8/23![Air Canada logo]()
$698
This Air France deal was found by Cheapflights users on 8/21. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/14:05 pm -
1 stop12h 45m
Wed 12/97:30 am -
1 stop16h 43m
Deal found 8/21![Air France logo]()
$701
This Gotogate deal was found by Cheapflights users on 8/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/73:00 pm -
2 stops16h 05m
Wed 10/1410:15 am -
2 stops17h 17m
Deal found 8/23![Multiple Airlines logo]()
$706
This Gotogate deal was found by Cheapflights users on 8/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:00 pm -
2 stops16h 05m
Wed 10/289:15 am -
2 stops19h 44m
Deal found 8/22![Multiple Airlines logo]()
$707
This Expedia deal was found by Cheapflights users on 8/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/178:09 am -
2 stops23h 26m
Tue 12/16:50 am -
2 stops24h 07m
Deal found 8/20![Multiple Airlines logo]()
$710
Best flights from Seattle to LuxembourgDiscover carefully curated flight deals from Seattle to Luxembourg that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 24, 2026.
Discover carefully curated flight deals from Seattle to Luxembourg that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 24, 2026.
This British Airways deal was found by Cheapflights users on 8/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:07 pm -
2 stops21h 58m
Mon 12/79:55 pm -
1 stop22h 30m
Deal found 8/22![British Airways logo]()
$705
This Gotogate deal was found by Cheapflights users on 8/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:00 pm -
2 stops16h 05m
Wed 10/289:15 am -
2 stops19h 44m
Deal found 8/22![Multiple Airlines logo]()
$707
This Gotogate deal was found by Cheapflights users on 8/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/276:50 pm -
1 stop12h 15m
Wed 10/78:20 am -
1 stop13h 00m
Deal found 8/20![Lufthansa logo]()
$747
This United Airlines deal was found by Cheapflights users on 8/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:50 pm -
1 stop15h 40m
Sun 10/118:25 am -
1 stop12h 55m
Deal found 8/19![United Airlines logo]()
$814
This United deal was found by Cheapflights users on 8/22. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:05 am -
2 stops23h 40m
Tue 11/176:50 am -
3 stops23h 06m
Deal found 8/22![Multiple Airlines logo]()
$723
This Booking.com deal was found by Cheapflights users on 8/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:50 pm -
1 stop12h 15m
Sun 10/256:50 am -
1 stop14h 10m
Deal found 8/19![Lufthansa logo]()
$780
This Gotogate deal was found by Cheapflights users on 8/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1810:50 am -
2 stops20h 15m
Sun 10/256:50 am -
1 stop14h 10m
Deal found 8/19![Multiple Airlines logo]()
$772
This Justfly.com deal was found by Cheapflights users on 8/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:50 pm -
1 stop15h 40m
Fri 10/210:55 am -
2 stops18h 42m
Deal found 8/21![Lufthansa logo]()
$817
This Air France deal was found by Cheapflights users on 8/21. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:30 pm -
1 stop15h 20m
Fri 10/210:25 am -
1 stop15h 10m
Deal found 8/21![Multiple Airlines logo]()
$811
Last-minute flights from Seattle to LuxembourgDiscover last-minute flight deals from Seattle to Luxembourg. Data last updated August 24, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Luxembourg. Data last updated August 24, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 8/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:50 pm -
1 stop12h 15m
Fri 10/26:15 am -
1 stop15h 05m
Deal found 8/20![Lufthansa logo]()
$807
This Air France deal was found by Cheapflights users on 8/19. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:30 pm -
1 stop15h 20m
Fri 10/210:25 am -
1 stop15h 10m
Deal found 8/19![Multiple Airlines logo]()
$811
This United Airlines deal was found by Cheapflights users on 8/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:50 pm -
1 stop12h 15m
Fri 10/28:20 am -
3 stops22h 39m
Deal found 8/19![United Airlines logo]()
$824
This Mytrip deal was found by Cheapflights users on 8/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:00 pm -
3 stops29h 50m
Wed 10/76:25 pm -
3 stops35h 15m
Deal found 8/20![Multiple Airlines logo]()
$730
This Gotogate deal was found by Cheapflights users on 8/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/276:50 pm -
1 stop12h 15m
Wed 10/78:20 am -
1 stop13h 00m
Deal found 8/20![Lufthansa logo]()
$747
Find flight deals from Seattle to Luxembourg
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Luxembourg (LUX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $679 (Expedia) |
Popular in | July |
Cheapest in | December |
Average price | $426 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Luxembourg 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 7,457,451 searches. Data last updated August 24, 2026.
Use the filters below to find and compare flights from Seattle to Luxembourg that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleLuxembourg
SEA Seattle/Tacoma Intl - LUX Luxembourg
SEALUX
Seattle/Tacoma Intl
Tue 12/1
2:07 pm-9:05 pm
2 stops21h 58m
Luxembourg
Mon 12/7
9:55 pm-11:25 am
1 stop22h 30m
$705
SeattleLuxembourg
SEA Seattle/Tacoma Intl - LUX Luxembourg
SEALUX
Seattle/Tacoma Intl
Wed 10/21
3:00 pm-4:05 pm
2 stops16h 05m
Luxembourg
Wed 10/28
9:15 am-8:59 pm
2 stops19h 44m
$707
SeattleLuxembourg
SEA Seattle/Tacoma Intl - LUX Luxembourg
SEALUX
Seattle/Tacoma Intl
Mon 11/9
5:05 am-1:45 pm
2 stops23h 40m
Luxembourg
Tue 11/17
6:50 am-8:56 pm
3 stops23h 06m
$723
Quickest round-trip
SeattleLuxembourg
SEA Seattle/Tacoma Intl - LUX Luxembourg
SEALUX
Seattle/Tacoma Intl
Sun 9/27
6:50 pm-4:05 pm
1 stop12h 15m
Luxembourg
Wed 10/7
8:20 am-12:20 pm
1 stop13h 00m
$747
SeattleLuxembourg
SEA Seattle/Tacoma Intl - LUX Luxembourg
SEALUX
Seattle/Tacoma Intl
Sun 10/18
10:50 am-4:05 pm
2 stops20h 15m
Luxembourg
Sun 10/25
6:50 am-1:00 pm
1 stop14h 10m
$772
SeattleLuxembourg
SEA Seattle/Tacoma Intl - LUX Luxembourg
SEALUX
Seattle/Tacoma Intl
Sun 10/18
6:50 pm-4:05 pm
1 stop12h 15m
Luxembourg
Sun 10/25
6:50 am-1:00 pm
1 stop14h 10m
$780
SeattleLuxembourg
SEA Seattle/Tacoma Intl - LUX Luxembourg
SEALUX
Seattle/Tacoma Intl
Thu 9/24
1:30 pm-1:50 pm
1 stop15h 20m
Luxembourg
Fri 10/2
10:25 am-4:35 pm
1 stop15h 10m
$811
SeattleLuxembourg
SEA Seattle/Tacoma Intl - LUX Luxembourg
SEALUX
Seattle/Tacoma Intl
Sun 10/4
6:50 pm-7:30 pm
1 stop15h 40m
Luxembourg
Sun 10/11
8:25 am-12:20 pm
1 stop12h 55m
$814
SeattleLuxembourg
SEA Seattle/Tacoma Intl - LUX Luxembourg
SEALUX
Seattle/Tacoma Intl
Thu 9/24
6:50 pm-7:30 pm
1 stop15h 40m
Luxembourg
Fri 10/2
10:55 am-8:37 pm
2 stops18h 42m
$817
Sorted by cheapest first
Compare providers for flights from Seattle to Luxembourg
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Luxembourg in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Luxembourg flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Luxembourg flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Luxembourg flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Luxembourg flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Luxembourg flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Luxembourg
Have a flexible travel schedule? Discover the best time to fly to Luxembourg from Seattle with our price prediction graph.
SEA-LUX
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.
Reviews of airlines servicing Luxembourg
Get insights into the airlines that provide service to Luxembourg. 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 Luxembourg. Reviews last updated August 24, 2026.
Read through reviews of airlines operating flights from Seattle to Luxembourg, such as Air France,United Airlines, andLufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.2
Overall
7.5
Boarding
7.5
Food
7.1
Comfort
7.4
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentCarlie,Jun 2026
ATH - CDG
Crew
8.2
Overall
7.5
Boarding
7.5
Food
7.1
Comfort
7.4
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentCarlie,Jun 2026
ATH - CDG
Crew
8.2
Overall
7.5
Boarding
7.5
Food
7.1
Comfort
7.4
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentCarlie,Jun 2026
ATH - CDG
Crew
8.2
Overall
7.5
Boarding
7.5
Food
7.1
Comfort
7.4
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentCarlie,Jun 2026
ATH - CDG
Related info for your journey
Find useful and relevant information for your journey from Seattle to Luxembourg. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Luxembourg?
Book flights to Luxembourg if you plan to visit one of these locationsEsch-sur-Alzette
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Complete your trip
Flights by cabin class
Luxembourg flight routes
Other flight options
Other flights from Seattle
Popular flights
Complete your trip
Complete your trip to Luxembourg by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Luxembourg by cabin class
Find flights from Seattle to Luxembourg, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Luxembourg
Explore flights to Luxembourg departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 24, 2026.
Seattle and Luxembourg flights
Browse other Seattle and Luxembourg flight options. Last updated on August 24, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on August 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Seattle to Luxembourg
Discover the top 3 airlines that operate flights from Seattle to Luxembourg. 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 7,457,451 searches. Data last updated August 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$457 | Average$840 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$471 | Average$592 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$490 | Average$723 | FlexibilityNo cancel fee | On-time76% |