$449 Cheap Flights from Seattle (SEA) to Bucharest (OTP)

View $449 flight on Sun, Jul 20, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Henri Coanda Intl. Airport (OTP)

Cheap Flights from Seattle to Bucharest (SEA-OTP)

Prices were available within the past 7 days and start at $449 for one-way flights and $539 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Sun, Aug 31 - Mon, Sep 8
SEA
Seattle
OTP
Bucharest
$539 Roundtrip, found 14 hours ago
$539
Roundtrip
found 14 hours ago
Select Scandinavian Airlines flight, departing Sun, Aug 31 from Seattle to Bucharest, returning Mon, Sep 8, priced at $539 found 14 hours ago
Scandinavian Airlines
Fri, Oct 10 - Sat, Oct 18
SEA
Seattle
OTP
Bucharest
$540 Roundtrip, found 6 days ago
$540
Roundtrip
found 6 days ago
Select Scandinavian Airlines flight, departing Fri, Oct 10 from Seattle to Bucharest, returning Sat, Oct 18, priced at $540 found 6 days ago
Scandinavian Airlines
Sun, Sep 14 - Sun, Sep 21
SEA
Seattle
OTP
Bucharest
$599 Roundtrip, found 19 hours ago
$599
Roundtrip
found 19 hours ago
Select Scandinavian Airlines flight, departing Sun, Sep 14 from Seattle to Bucharest, returning Sun, Sep 21, priced at $599 found 19 hours ago
Air Canada
Tue, Dec 2 - Fri, Dec 12
SEA
Seattle
OTP
Bucharest
$606 Roundtrip, found 11 hours ago
$606
Roundtrip
found 11 hours ago
Select Air Canada flight, departing Tue, Dec 2 from Seattle to Bucharest, returning Fri, Dec 12, priced at $606 found 11 hours ago
United
Wed, Dec 24 - Fri, Jan 9
SEA
Seattle
OTP
Bucharest
$607 Roundtrip, found 5 days ago
$607
Roundtrip
found 5 days ago
Select United flight, departing Wed, Dec 24 from Seattle to Bucharest, returning Fri, Jan 9, priced at $607 found 5 days ago
Swiss International Air Lines
Tue, Oct 28 - Thu, Nov 6
SEA
Seattle
OTP
Bucharest
$608 Roundtrip, found 1 day ago
$608
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Tue, Oct 28 from Seattle to Bucharest, returning Thu, Nov 6, priced at $608 found 1 day ago
United
Tue, Dec 2 - Fri, Dec 12
SEA
Seattle
OTP
Bucharest
$610 Roundtrip, found 11 hours ago
$610
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Dec 2 from Seattle to Bucharest, returning Fri, Dec 12, priced at $610 found 11 hours ago
Lufthansa
Tue, Dec 2 - Fri, Dec 12
SEA
Seattle
OTP
Bucharest
$610 Roundtrip, found 11 hours ago
$610
Roundtrip
found 11 hours ago
Select Lufthansa flight, departing Tue, Dec 2 from Seattle to Bucharest, returning Fri, Dec 12, priced at $610 found 11 hours ago
Air Canada
Wed, Nov 19 - Wed, Nov 26
SEA
Seattle
OTP
Bucharest
$610 Roundtrip, found 1 day ago
$610
Roundtrip
found 1 day ago
Select Air Canada flight, departing Wed, Nov 19 from Seattle to Bucharest, returning Wed, Nov 26, priced at $610 found 1 day ago
British Airways
Tue, Oct 28 - Thu, Nov 6
SEA
Seattle
OTP
Bucharest
$614 Roundtrip, found 1 day ago
$614
Roundtrip
found 1 day ago
Select British Airways flight, departing Tue, Oct 28 from Seattle to Bucharest, returning Thu, Nov 6, priced at $614 found 1 day ago

Find the cheapest month to fly from Seattle (SEA) to Bucharest (OTP)

August is typically the cheapest month to fly

From $506 - $1,620 per traveler.

Graph displaying average flight prices per month

Alternative airports near Bucharest

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Henri Coanda Intl. OTP. Cheapest option available. Average driving time to city center is 19 minutes. Flights from $962
OTP
Henri Coanda Intl.
Cheapest
Average driving time to city center19 min
Flights from $962
Flights from Seattle (SEA) to Bucharest (OTP)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Henri Coanda Intl.
Airlines serving
Air Canada, Air Europa, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Emirates, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$538
Distance
5795 mi

Seattle to Bucharest Flights

The cheapest times to fly from Seattle to Bucharest

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 Seattle to Bucharest are during the month of August. You can find some of the cheapest flights from Seattle to Bucharest with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Bucharest

Sunday is one of the best days to book for cheap flights from Seattle to Bucharest: 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 Seattle to Bucharest

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 Seattle to Bucharest in 2025. You can also book with separate airlines for your outbound and return journeys, from $449 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 Seattle to Bucharest 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 Seattle to Bucharest 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 Seattle - Tacoma Intl. Airport (SEA) to Henri Coanda Intl. Airport (OTP) cost?
Discover the latest flight deals from SEA to OTP by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SEA to OTP?
The cheapest flights from SEA to OTP are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SEA to OTP?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SEA to OTP. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Henri Coanda Intl. Airport (OTP)?
There aren't any daily nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Henri Coanda Intl. Airport (OTP). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from SEA to OTP?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can vary based on the time of year, carrier 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 Seattle - Tacoma Intl. Airport (SEA) to Henri Coanda Intl. Airport (OTP)?
Choose a flight from Seattle - Tacoma Intl. Airport (SEA) to Henri Coanda Intl. Airport (OTP) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Later departures 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 Seattle - Tacoma Intl. Airport (SEA) to Henri Coanda Intl. Airport (OTP) last-minute?
Holding off until just before your trip to book a flight from SEA to OTP often results in higher prices. While you might find some last-minute deals, there's no guarantee. Keep your travel plans flexible for a better chance of getting a bargain.
Is it cheaper to book a SEA to OTP flight and hotel package?
You'll generally save money by securing a SEA to OTP flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After selecting your ideal flights and accommodations, you can add extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Henri Coanda Intl. Airport (OTP)?
If you booked your SEA to OTP flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

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*Available to One Key members.