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Cheap flights from Seattle to Bucharest from $382

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bucharest departing on 12/1. 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

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Lufthansa Logo
3:10 pm - 1:05 amSEA-OTP
23h 55m1 stop
Lufthansa Logo
7:20 pm - 7:16 pmOTP-SEA
33h 56m2 stops
$472Lufthansa
Find Deal
Sun, Dec 28 - Mon, Jan 12
Lufthansa Logo
3:10 pm - 1:05 amSEA-OTP
23h 55m1 stop
Lufthansa Logo
5:55 am - 12:10 pmOTP-SEA
16h 15m1 stop
$485Lufthansa
Find Deal
Sun, Dec 28 - Mon, Jan 12
Lufthansa Logo
3:10 pm - 1:05 amSEA-OTP
23h 55m1 stop
Lufthansa Logo
5:55 am - 12:10 pmOTP-SEA
16h 15m1 stop
$489Lufthansa
Find Deal
Sun, Dec 28 - Mon, Jan 12
Delta Logo
2:05 pm - 10:50 pmSEA-OTP
22h 45m2 stops
Delta Logo
6:00 am - 7:00 pmOTP-SEA
23h 00m2 stops
$548Delta
Find Deal
Tue, Dec 9 - Tue, Dec 16
United Airlines Logo
7:00 am - 11:55 pmSEA-OTP
30h 55m2 stops
United Airlines Logo
5:55 am - 9:00 pmOTP-SEA
25h 05m3 stops
$560United Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
United Airlines Logo
8:10 am - 11:55 pmSEA-OTP
29h 45m2 stops
United Airlines Logo
2:50 pm - 12:50 amOTP-SEA
20h 00m2 stops
$562United Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
KLM Logo
5:35 pm - 11:30 pmSEA-OTP
19h 55m1 stop
KLM Logo
6:05 pm - 11:35 amOTP-SEA
27h 30m1 stop
$589KLM
Find Deal
Wed, Apr 1 - Mon, Apr 13
Turkish Airlines Logo
8:00 pm - 2:10 pmSEA-OTP
33h 10m1 stop
Turkish Airlines Logo
3:30 pm - 6:05 pmOTP-SEA
35h 35m1 stop
$625Turkish Airlines
Find Deal
Thu, Mar 12 - Sat, Mar 21
Delta Logo
2:05 pm - 10:50 pmSEA-OTP
22h 45m1 stop
Delta Logo
6:05 am - 7:35 pmOTP-SEA
23h 30m2 stops
$643Delta
Find Deal
Sun, Dec 28 - Mon, Jan 12
Turkish Airlines Logo
7:00 pm - 8:30 pmSEA-OTP
15h 30m1 stop
Turkish Airlines Logo
9:50 pm - 5:05 pmOTP-SEA
29h 15m1 stop
$880Turkish Airlines
Find Deal
Mon, Dec 22 - Sun, Jan 11

Turkish Airlines flights from Seattle to Bucharest Otopeni Intl Airport

Our best Turkish Airlines deals on Seattle to Bucharest Otopeni Intl Airport flight tickets
Turkish Airlines
Mar 12
SEA8:00 pmSeattle/Tacoma Intl
33h 10m
1 stop
OTP2:10 pmBucharest Otopeni Intl
Mar 21
OTP3:30 pmBucharest Otopeni Intl
35h 35m
1 stop
SEA6:05 pmSeattle/Tacoma Intl
$625
Find similar
Turkish Airlines
Dec 22
SEA7:00 pmSeattle/Tacoma Intl
15h 30m
1 stop
OTP8:30 pmBucharest Otopeni Intl
Jan 11
OTP9:50 pmBucharest Otopeni Intl
29h 15m
1 stop
SEA5:05 pmSeattle/Tacoma Intl
$880
Find similar
Turkish Airlines
Dec 12
SEA7:00 pmSeattle/Tacoma Intl
15h 30m
1 stop
OTP8:30 pmBucharest Otopeni Intl
Dec 26
OTP10:10 amBucharest Otopeni Intl
16h 55m
1 stop
SEA5:05 pmSeattle/Tacoma Intl
$1,020
Find similar

United Airlines flights from Seattle to Bucharest Otopeni Intl Airport

Our best United Airlines deals on Seattle to Bucharest Otopeni Intl Airport flight tickets
United Airlines
Dec 9
SEA7:00 amSeattle/Tacoma Intl
30h 55m
2 stops
OTP11:55 pmBucharest Otopeni Intl
Dec 16
OTP5:55 amBucharest Otopeni Intl
25h 05m
3 stops
SEA9:00 pmSeattle/Tacoma Intl
$560
Find similar
United Airlines
Dec 1
SEA8:10 amSeattle/Tacoma Intl
29h 45m
2 stops
OTP11:55 pmBucharest Otopeni Intl
Dec 8
OTP2:50 pmBucharest Otopeni Intl
20h 00m
2 stops
SEA12:50 amSeattle/Tacoma Intl
$562
Find similar
United Airlines
Dec 1
SEA8:10 amSeattle/Tacoma Intl
29h 45m
2 stops
OTP11:55 pmBucharest Otopeni Intl
Dec 8
OTP2:50 pmBucharest Otopeni Intl
44h 00m
3 stops
SEA12:50 amSeattle/Tacoma Intl
$577
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 November 4, 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 12/28

3:10 pm-1:05 am

1 stop23h 55m

Bucharest Otopeni Intl

Mon 1/12

7:20 pm-7:16 pm

2 stops33h 56m

$472

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 12/28

3:10 pm-1:05 am

1 stop23h 55m

Bucharest Otopeni Intl

Mon 1/12

5:55 am-12:10 pm

1 stop16h 15m

$485

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 12/28

3:10 pm-1:05 am

1 stop23h 55m

Bucharest Otopeni Intl

Mon 1/12

5:55 am-12:10 pm

1 stop16h 15m

$489

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 12/9

2:05 pm-10:50 pm

2 stops22h 45m

Bucharest Otopeni Intl

Tue 12/16

6:00 am-7:00 pm

2 stops23h 00m

$548

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 12/9

7:00 am-11:55 pm

2 stops30h 55m

Bucharest Otopeni Intl

Tue 12/16

5:55 am-9:00 pm

3 stops25h 05m

$560

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Mon 12/1

8:10 am-11:55 pm

2 stops29h 45m

Bucharest Otopeni Intl

Mon 12/8

2:50 pm-12:50 am

2 stops20h 00m

$562

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Wed 4/1

5:35 pm-11:30 pm

1 stop19h 55m

Bucharest Otopeni Intl

Mon 4/13

6:05 pm-11:35 am

1 stop27h 30m

$589

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Thu 3/12

8:00 pm-2:10 pm

1 stop33h 10m

Bucharest Otopeni Intl

Sat 3/21

3:30 pm-6:05 pm

1 stop35h 35m

$625

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 12/28

2:05 pm-10:50 pm

1 stop22h 45m

Bucharest Otopeni Intl

Mon 1/12

6:05 am-7:35 pm

2 stops23h 30m

$643

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Mon 12/22

7:00 pm-8:30 pm

1 stop15h 30m

Bucharest Otopeni Intl

Sun 1/11

9:50 pm-5:05 pm

1 stop29h 15m

$880

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 September, then book flights to Bucharest Otopeni Intl Airport from Seattle during October instead. Flights to Bucharest Otopeni Intl Airport in October, while not as cheap as those in September, still average around $687.

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 $940 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 17% 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?

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 $581Free CancellationRating
6.8
7,547 reviews
Search Lufthansa flights
United AirlinesPriceFrom $585Free CancellationRating
7.4
8,999 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $596Free CancellationRating
7.3
4,038 reviews
Search Turkish Airlines flights
KLMPriceFrom $656Free CancellationRating
7.7
1,405 reviews
Search KLM flights
DeltaPriceFrom $772Free CancellationRating
7.9
8,002 reviews
Search Delta 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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