$685 Cheap Flights from Rotterdam (RTM) to Seattle (SEA)

View $685 flight on Thu, Nov 27, 2025Opens in a new window

Popular airlines from Rotterdam (RTM-Rotterdam The Hague) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Rotterdam to Seattle (RTM-SEA)

Prices were available within the past 7 days and start at $685 for one-way flights and $910 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Sun, Feb 8 - Sun, Feb 22
RTM
Rotterdam
SEA
Seattle
$910 Roundtrip, found 6 days ago
$910
Roundtrip
found 6 days ago
Select British Airways flight, departing Sun, Feb 8 from Rotterdam to Seattle, returning Sun, Feb 22, priced at $910 found 6 days ago
British Airways
Sun, Jan 11 - Sun, Jan 25
RTM
Rotterdam
SEA
Seattle
$915 Roundtrip, found 6 days ago
$915
Roundtrip
found 6 days ago
Select British Airways flight, departing Sun, Jan 11 from Rotterdam to Seattle, returning Sun, Jan 25, priced at $915 found 6 days ago
British Airways
Mon, Nov 3 - Mon, Nov 10
RTM
Rotterdam
SEA
Seattle
$958 Roundtrip, found 2 days ago
$958
Roundtrip
found 2 days ago
Select British Airways flight, departing Mon, Nov 3 from Rotterdam to Seattle, returning Mon, Nov 10, priced at $958 found 2 days ago
British Airways
Mon, Feb 9 - Wed, Feb 25
RTM
Rotterdam
SEA
Seattle
$959 Roundtrip, found 6 days ago
$959
Roundtrip
found 6 days ago
Select British Airways flight, departing Mon, Feb 9 from Rotterdam to Seattle, returning Wed, Feb 25, priced at $959 found 6 days ago
British Airways
Mon, Feb 9 - Thu, Feb 19
RTM
Rotterdam
SEA
Seattle
$964 Roundtrip, found 6 days ago
$964
Roundtrip
found 6 days ago
Select British Airways flight, departing Mon, Feb 9 from Rotterdam to Seattle, returning Thu, Feb 19, priced at $964 found 6 days ago
British Airways
Mon, Nov 3 - Mon, Nov 10
RTM
Rotterdam
SEA
Seattle
$968 Roundtrip, found 2 days ago
$968
Roundtrip
found 2 days ago
Select British Airways flight, departing Mon, Nov 3 from Rotterdam to Seattle, returning Mon, Nov 10, priced at $968 found 2 days ago
British Airways
Sun, Feb 8 - Sun, Feb 22
RTM
Rotterdam
SEA
Seattle
$1,069 Roundtrip, found 6 days ago
$1,069
Roundtrip
found 6 days ago
Select British Airways flight, departing Sun, Feb 8 from Rotterdam to Seattle, returning Sun, Feb 22, priced at $1,069 found 6 days ago
British Airways
Sun, Feb 8 - Sun, Feb 22
RTM
Rotterdam
SEA
Seattle
$1,074 Roundtrip, found 6 days ago
$1,074
Roundtrip
found 6 days ago
Select British Airways flight, departing Sun, Feb 8 from Rotterdam to Seattle, returning Sun, Feb 22, priced at $1,074 found 6 days ago
British Airways
Mon, Nov 3 - Mon, Nov 10
RTM
Rotterdam
SEA
Seattle
$1,075 Roundtrip, found 2 days ago
$1,075
Roundtrip
found 2 days ago
Select British Airways flight, departing Mon, Nov 3 from Rotterdam to Seattle, returning Mon, Nov 10, priced at $1,075 found 2 days ago
British Airways
Mon, Feb 9 - Mon, Feb 23
RTM
Rotterdam
SEA
Seattle
$1,083 Roundtrip, found 6 days ago
$1,083
Roundtrip
found 6 days ago
Select British Airways flight, departing Mon, Feb 9 from Rotterdam to Seattle, returning Mon, Feb 23, priced at $1,083 found 6 days ago
Flights from Rotterdam (RTM) to Seattle (SEA)
Origin airport
Rotterdam The Hague
Destination airport
Seattle - Tacoma Intl.
Roundtrip price
$910
Distance
4883 mi

Rotterdam to Seattle Flights

The cheapest times to fly from Rotterdam to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Rotterdam to Seattle are during the month of February. You can find some of the cheapest flights from Rotterdam to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rotterdam to Seattle

Sunday is one of the best days to book for cheap flights from Rotterdam to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Rotterdam to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Rotterdam to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $685 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Rotterdam to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Rotterdam to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Rotterdam The Hague Airport (RTM) to Seattle - Tacoma Intl. Airport (SEA) cost?
Get a cheap one-way flight from $685 or cheap return flight from $910 from Rotterdam The Hague Airport (RTM) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Rotterdam The Hague Airport (RTM) to Seattle - Tacoma Intl. Airport (SEA)?
February is the least expensive month to fly from RTM to SEA. Traveling outside of peak seasons is often the key to landing a great deal.
Which airlines fly direct from Rotterdam The Hague Airport (RTM) to Seattle - Tacoma Intl. Airport (SEA)?
You can't catch a nonstop flight to Seattle - Tacoma Intl. Airport (SEA) from Rotterdam (RTM-Rotterdam The Hague). However, you can easily reach Seattle without any layovers by leaving from Schiphol Airport (AMS).
What is the cheapest airline that flies from Rotterdam The Hague Airport (RTM) to Seattle - Tacoma Intl. Airport (SEA)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from RTM to SEA. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Rotterdam The Hague Airport (RTM) to Seattle - Tacoma Intl. Airport (SEA)?
You'll have to take a flight with a layover when traveling from Rotterdam The Hague Airport (RTM) to Seattle - Tacoma Intl. Airport (SEA). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from RTM to SEA?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can change based on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Rotterdam The Hague Airport (RTM) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid potential delays on the Rotterdam The Hague Airport (RTM) to Seattle - Tacoma Intl. Airport (SEA) route, travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Rotterdam The Hague Airport (RTM) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Holding off until just before your trip to book a flight from RTM to SEA generally means paying more. While you may find some last-minute discounts, they're not always guaranteed. Keep your travel plans flexible for the best chance of landing a bargain.
Is it cheaper to book a RTM to SEA flight and hotel package?
Compared with arranging flights and hotels separately, booking a RTM to SEA flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place will take the hassle out of planning your trip. Just pick your flights and select from our wide range of stays, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Rotterdam The Hague Airport (RTM) to Seattle - Tacoma Intl. Airport (SEA)?
Typically, you're able to reschedule or cancel your RTM to SEA flight. However, there may be additional charges, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like further details, visit our Customer Service portal.

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*Available to One Key members.