$619 Cheap Flights from Colombo (CMB) to Seattle (SEA)

View $619 flight on Thu, Feb 12, 2026Opens in a new window

Popular airlines from Bandaranaike Intl. Airport (CMB) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Colombo to Seattle (CMB-SEA)

Prices were available within the past 7 days and start at $619 for one-way flights and $1,036 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

SriLankan Airlines
Thu, Oct 30 - Wed, Nov 5
CMB
Colombo
SEA
Seattle
$1,036 Roundtrip, found 1 day ago
$1,036
Roundtrip
found 1 day ago
Select SriLankan Airlines flight, departing Thu, Oct 30 from Colombo to Seattle, returning Wed, Nov 5, priced at $1,036 found 1 day ago
SriLankan Airlines
Thu, Oct 30 - Wed, Nov 5
CMB
Colombo
SEA
Seattle
$1,112 Roundtrip, found 1 day ago
$1,112
Roundtrip
found 1 day ago
Select SriLankan Airlines flight, departing Thu, Oct 30 from Colombo to Seattle, returning Wed, Nov 5, priced at $1,112 found 1 day ago
SriLankan Airlines
Sun, Mar 8 - Tue, Mar 31
CMB
Colombo
SEA
Seattle
$1,115 Roundtrip, found 5 days ago
$1,115
Roundtrip
found 5 days ago
Select SriLankan Airlines flight, departing Sun, Mar 8 from Colombo to Seattle, returning Tue, Mar 31, priced at $1,115 found 5 days ago
SriLankan Airlines
Thu, Dec 4 - Wed, Feb 4
CMB
Colombo
SEA
Seattle
$1,132 Roundtrip, found 16 hours ago
$1,132
Roundtrip
found 16 hours ago
Select SriLankan Airlines flight, departing Thu, Dec 4 from Colombo to Seattle, returning Wed, Feb 4, priced at $1,132 found 16 hours ago
SriLankan Airlines
Thu, Dec 4 - Wed, Feb 4
CMB
Colombo
SEA
Seattle
$1,144 Roundtrip, found 16 hours ago
$1,144
Roundtrip
found 16 hours ago
Select SriLankan Airlines flight, departing Thu, Dec 4 from Colombo to Seattle, returning Wed, Feb 4, priced at $1,144 found 16 hours ago
Air India
Thu, Dec 4 - Wed, Feb 4
CMB
Colombo
SEA
Seattle
$1,169 Roundtrip, found 16 hours ago
$1,169
Roundtrip
found 16 hours ago
Select Air India flight, departing Thu, Dec 4 from Colombo to Seattle, returning Wed, Feb 4, priced at $1,169 found 16 hours ago
Air India
Thu, Feb 5 - Sat, Feb 21
CMB
Colombo
SEA
Seattle
$1,171 Roundtrip, found 6 days ago
$1,171
Roundtrip
found 6 days ago
Select Air India flight, departing Thu, Feb 5 from Colombo to Seattle, returning Sat, Feb 21, priced at $1,171 found 6 days ago
Thai Airways International
Sat, Feb 14 - Sat, Apr 18
CMB
Colombo
SEA
Seattle
$1,182 Roundtrip, found 3 days ago
$1,182
Roundtrip
found 3 days ago
Select Thai Airways International flight, departing Sat, Feb 14 from Colombo to Seattle, returning Sat, Apr 18, priced at $1,182 found 3 days ago
Qatar Airways
Thu, Oct 30 - Wed, Nov 5
CMB
Colombo
SEA
Seattle
$1,524 Roundtrip, found 1 day ago
$1,524
Roundtrip
found 1 day ago
Select Qatar Airways flight, departing Thu, Oct 30 from Colombo to Seattle, returning Wed, Nov 5, priced at $1,524 found 1 day ago
Emirates
Fri, Jan 30 - Sun, Feb 15
CMB
Colombo
SEA
Seattle
$1,529 Roundtrip, found 3 days ago
$1,529
Roundtrip
found 3 days ago
Select Emirates flight, departing Fri, Jan 30 from Colombo to Seattle, returning Sun, Feb 15, priced at $1,529 found 3 days ago

Find the cheapest month to fly from Colombo (CMB) to Seattle (SEA)

September is typically the cheapest month to fly

From $961 - $1,398 per traveler.

Frequently asked questions

How much does a flight from Bandaranaike Intl. Airport (CMB) to Seattle - Tacoma Intl. Airport (SEA) cost?
Get a cheap one-way flight from $619 or cheap return flight from $1,036 from Bandaranaike Intl. Airport (CMB) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Bandaranaike Intl. Airport (CMB) to Seattle - Tacoma Intl. Airport (SEA)?
October is the most affordable month to fly from CMB to SEA. Traveling during quieter months is often the key to landing a great deal.
What is the cheapest airline that flies from Bandaranaike Intl. Airport (CMB) to Seattle - Tacoma Intl. Airport (SEA)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll fly you from CMB to SEA. Then, sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Bandaranaike Intl. Airport (CMB) to Seattle - Tacoma Intl. Airport (SEA)?
Direct flights from Bandaranaike Intl. Airport (CMB) to Seattle - Tacoma Intl. Airport (SEA) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CMB to SEA?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the airline, season 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 Bandaranaike Intl. Airport (CMB) to Seattle - Tacoma Intl. Airport (SEA)?
Opt for a flight from Bandaranaike Intl. Airport (CMB) to Seattle - Tacoma Intl. Airport (SEA) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**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 Bandaranaike Intl. Airport (CMB) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Booking your ticket from CMB to SEA right before your getaway is typically more expensive. However, if you're flexible with your schedule, you could bag a cheap last-minute fare.
Is it cheaper to book a CMB to SEA flight and hotel package?
You can save money by securing a CMB to SEA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. After choosing your preferred accommodations and flights, consider adding extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Bandaranaike Intl. Airport (CMB) to Seattle - Tacoma Intl. Airport (SEA)?
In most instances, you're able to reschedule or cancel your CMB to SEA flight. However, there may be additional fees, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you want further details, head to our Customer Service portal.

Travel information

Origin airport
Bandaranaike Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Cathay Pacific, Emirates, Qatar Airways, Singapore Airlines, Turkish Airlines
Roundtrip price
$1,035
Distance
8426 mi

Book with confidence

Colombo to Seattle Flights

The cheapest times to fly from Colombo 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 Colombo to Seattle are during the month of October. You can find some of the cheapest flights from Colombo to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Colombo to Seattle

Sunday is one of the best days to book for cheap flights from Colombo 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 Colombo 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 Colombo to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $619 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 Colombo 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 Colombo 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.

 

Colombo to Seattle Flights

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*Available to One Key members.