Popular airlines from Seattle-Tacoma International Airport (SEA) to Henri Coanda Intl. Airport (OTP)
British AirwaysBritish Airways
LufthansaLufthansa
Air CanadaAir Canada
Turkish AirlinesTurkish Airlines
Swiss International Air LinesSwiss International Air Lines
Austrian AirlinesAustrian Airlines
Air FranceAir France
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Cheap Flights from Seattle to Bucharest (SEA-OTP)
Prices were available within the past 7 days and start at $442 for one-way flights and $553 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Find the cheapest month to fly from Seattle (SEA) to Bucharest (OTP)
August is typically the cheapest month to fly
Frequently asked questions
Travel information
Travel information
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 | $552 |
Distance | 5795 mi |
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Book with confidence
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 November. 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 $442 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.
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