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Cheap flights from Seattle to Bucharest from $531

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bucharest departing on 10/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Logo
2:55 pm - 6:35 pmSEA-OTP
17h 40m2 stops
Logo
5:55 am - 12:10 pmOTP-SEA
16h 15m1 stop
$531
Find Deal
Sun, Oct 19 - Tue, Nov 4
Air Canada Logo
5:30 am - 6:35 pmSEA-OTP
27h 05m2 stops
Air Canada Logo
6:30 am - 10:16 pmOTP-SEA
25h 46m2 stops
$539Air Canada
Find Deal
Sun, Oct 19 - Tue, Nov 4
Lufthansa Logo
4:10 pm - 6:35 pmSEA-OTP
17h 25m1 stop
Lufthansa Logo
5:55 am - 12:10 pmOTP-SEA
16h 15m1 stop
$544Lufthansa
Find Deal
Sun, Oct 26 - Tue, Nov 4
Lufthansa Logo
6:50 pm - 6:35 pmSEA-OTP
13h 45m1 stop
Lufthansa Logo
5:55 am - 12:10 pmOTP-SEA
16h 15m1 stop
$551Lufthansa
Find Deal
Sun, Oct 19 - Tue, Nov 4
United Airlines Logo
9:25 am - 6:25 pmSEA-OTP
24h 00m2 stops
United Airlines Logo
5:55 am - 12:10 pmOTP-SEA
16h 15m1 stop
$561United Airlines
Find Deal
Tue, Oct 28 - Tue, Nov 4
United Airlines Logo
7:00 am - 2:05 pmSEA-OTP
22h 05m2 stops
United Airlines Logo
2:40 pm - 9:50 amOTP-SEA
29h 10m2 stops
$567United Airlines
Find Deal
Mon, Oct 27 - Wed, Nov 5
Delta Logo
3:10 pm - 10:50 pmSEA-OTP
22h 40m1 stop
Delta Logo
6:05 am - 1:20 pmOTP-SEA
17h 15m1 stop
$570Delta
Find Deal
Sun, Oct 26 - Wed, Nov 5
Delta Logo
11:35 pm - 10:50 pmSEA-OTP
37h 15m2 stops
Delta Logo
6:05 am - 2:00 pmOTP-SEA
16h 55m1 stop
$574Delta
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Sat, Feb 28 - Wed, Mar 11
Turkish Airlines Logo
7:10 pm - 8:10 amSEA-OTP
27h 00m1 stop
Turkish Airlines Logo
9:55 pm - 5:15 pmOTP-SEA
29h 20m1 stop
$609Turkish Airlines
Find Deal
Sat, Oct 11 - Wed, Oct 15
Turkish Airlines Logo
7:10 pm - 2:35 pmSEA-OTP
33h 25m1 stop
Turkish Airlines Logo
3:55 pm - 5:15 pmOTP-SEA
35h 20m1 stop
$618Turkish Airlines
Find Deal
Fri, Oct 10 - Fri, Oct 24

British Airways flights from Seattle to Bucharest Otopeni Intl Airport

Our best British Airways deals on Seattle to Bucharest Otopeni Intl Airport flight tickets
British Airways
Oct 27
SEA7:50 pmSeattle/Tacoma Intl
18h 10m
1 stop
OTP11:00 pmBucharest Otopeni Intl
Nov 4
OTP8:00 amBucharest Otopeni Intl
18h 55m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$542
Find similar
British Airways
Oct 28
SEA7:50 pmSeattle/Tacoma Intl
18h 05m
1 stop
OTP10:55 pmBucharest Otopeni Intl
Nov 6
OTP8:00 amBucharest Otopeni Intl
18h 55m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$552
Find similar
British Airways
Mar 1
SEA6:50 pmSeattle/Tacoma Intl
18h 55m
1 stop
OTP11:45 pmBucharest Otopeni Intl
Mar 12
OTP8:00 amBucharest Otopeni Intl
37h 30m
1 stop
SEA12:30 pmSeattle/Tacoma Intl
$553
Find similar

Air Canada flights from Seattle to Bucharest Otopeni Intl Airport

Our best Air Canada deals on Seattle to Bucharest Otopeni Intl Airport flight tickets
Air Canada
Oct 28
SEA8:00 pmSeattle/Tacoma Intl
37h 40m
2 stops
OTP6:40 pmBucharest Otopeni Intl
Nov 6
OTP5:50 amBucharest Otopeni Intl
26h 16m
2 stops
SEA10:06 pmSeattle/Tacoma Intl
$560
Find similar
Air Canada
Mar 4
SEA10:05 amSeattle/Tacoma Intl
17h 55m
2 stops
OTP2:00 pmBucharest Otopeni Intl
Mar 13
OTP5:55 amBucharest Otopeni Intl
36h 36m
2 stops
SEA9:31 amSeattle/Tacoma Intl
$562
Find similar
Air Canada
Oct 28
SEA8:15 amSeattle/Tacoma Intl
25h 10m
2 stops
OTP6:25 pmBucharest Otopeni Intl
Nov 6
OTP5:50 amBucharest Otopeni Intl
23h 26m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$566
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Bucharest Otopeni Intl Airport 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, momondo users made 832,500 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Seattle to Bucharest Otopeni Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 10/19

2:55 pm-6:35 pm

2 stops17h 40m

Bucharest Otopeni Intl

Tue 11/4

5:55 am-12:10 pm

1 stop16h 15m

$531

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 10/19

5:30 am-6:35 pm

2 stops27h 05m

Bucharest Otopeni Intl

Tue 11/4

6:30 am-10:16 pm

2 stops25h 46m

$539

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 10/26

4:10 pm-6:35 pm

1 stop17h 25m

Bucharest Otopeni Intl

Tue 11/4

5:55 am-12:10 pm

1 stop16h 15m

$544

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 10/19

6:50 pm-6:35 pm

1 stop13h 45m

Bucharest Otopeni Intl

Tue 11/4

5:55 am-12:10 pm

1 stop16h 15m

$551

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 10/28

9:25 am-6:25 pm

2 stops24h 00m

Bucharest Otopeni Intl

Tue 11/4

5:55 am-12:10 pm

1 stop16h 15m

$561

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Mon 10/27

7:00 am-2:05 pm

2 stops22h 05m

Bucharest Otopeni Intl

Wed 11/5

2:40 pm-9:50 am

2 stops29h 10m

$567

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 10/26

3:10 pm-10:50 pm

1 stop22h 40m

Bucharest Otopeni Intl

Wed 11/5

6:05 am-1:20 pm

1 stop17h 15m

$570

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sat 2/28

11:35 pm-10:50 pm

2 stops37h 15m

Bucharest Otopeni Intl

Wed 3/11

6:05 am-2:00 pm

1 stop16h 55m

$574

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sat 10/11

7:10 pm-8:10 am

1 stop27h 00m

Bucharest Otopeni Intl

Wed 10/15

9:55 pm-5:15 pm

1 stop29h 20m

$609

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 10/10

7:10 pm-2:35 pm

1 stop33h 25m

Bucharest Otopeni Intl

Fri 10/24

3:55 pm-5:15 pm

1 stop35h 20m

$618

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Bucharest from

How to get the cheapest flight ticket from Seattle to Bucharest Otopeni Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Bucharest Otopeni Intl Airport?

If you aren’t able to travel during the month of October, then book flights to Bucharest Otopeni Intl Airport from Seattle during February instead. Flights to Bucharest Otopeni Intl Airport in February, while not as cheap as those in October, still average around $709.

What is the cheapest day to depart on your flight to Bucharest Otopeni Intl Airport?

Our data shows that Sunday is the least expensive day to fly to Bucharest Otopeni Intl Airport. Tickets to fly out on this day can be as low as $879. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Bucharest Otopeni Intl Airport for around $1,246.

What is the cheapest time of day to depart on your flight to Bucharest Otopeni Intl Airport?

Our most recent data shows that the best time of day to fly to Bucharest Otopeni Intl Airport is in the morning. Flights from Seattle to Bucharest Otopeni Intl Airport during this time can be as low as $812. In the evening is when there is more demand to fly to Bucharest Otopeni Intl Airport, so prices are often more expensive at around $2,198 per ticket.

How far in advance should I book a flight to Bucharest Otopeni Intl Airport?

You are more likely to see cheaper flights to Bucharest Otopeni Intl Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Bucharest Otopeni Intl Airport for around $958 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bucharest Otopeni Intl Airport from Seattle for as low as $618 on momondo.

Can stopping save me money on Seattle to Bucharest Otopeni Intl Airport flights?

You could potentially save up to 21% on your flight if you consider stops on a Seattle to Bucharest Otopeni Intl Airport flight.

How have Seattle to Bucharest Otopeni Intl Airport flight prices changed over time?

As of September 2025, prices for Seattle to Bucharest Otopeni Intl Airport flights are approximately 41% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Bucharest Otopeni Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Bucharest Otopeni Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Bucharest Otopeni Intl Airport (SEA to OTP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Bucharest Otopeni Intl Airport

Direct flights

None
There are no direct flights from Seattle to Bucharest Otopeni Intl Airport. There are no popular flight routes from Seattle to Bucharest Otopeni Intl Airport.
Search flight deals

  • How far is Seattle/Tacoma Intl to Bucharest Otopeni Intl by plane?

    There are 5781.4 mi between Seattle/Tacoma Intl and Bucharest Otopeni Intl. A reasonable flight in good conditions will take 13h 45m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Bucharest Otopeni Intl Airport.

  • What documentation or ID do you need to fly to Bucharest Otopeni Intl Airport?

    The travel and health documents you'll need for your trip to Bucharest Otopeni Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bucharest Otopeni Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Bucharest Otopeni Intl Airport?

Best airlines flying from Seattle to Bucharest Otopeni Intl Airport

Compare and see reviews for airlines that fly from Seattle to Bucharest Otopeni Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $585Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
Turkish AirlinesPriceFrom $598Free CancellationRating
7.3
3,968 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $624Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
DeltaPriceFrom $684Free CancellationRating
7.9
7,954 reviews
Search Delta flights
Air FrancePriceFrom $699Free CancellationRating
7.4
1,469 reviews
Search Air France flights
KLMPriceFrom $705Free CancellationRating
7.8
1,385 reviews
Search KLM flights

Traveling to a place near Bucharest?

Book flights to Bucharest if you plan to visit one of these locations
Otopeni

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Bucharest?

It is quick and easy to find Seattle to Bucharest flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Bucharest that suits you.

Can I find flights from Seattle to Bucharest with flexible booking policies on momondo?

All flight searches from Seattle to Bucharest on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Bucharest?

momondo helps you find the best flight between Seattle and Bucharest by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Bucharest right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Bucharest now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bucharest and let you know when they change.

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