Find cheap flights from Seattle/Tacoma Airport to District of Columbia

Find cheap flights from Seattle/Tacoma Airport to District of Columbia

Round-trip
Economy
Seattle (SEA)
District of Columbia
Thu 8/13
Thu 8/20
Any month
Compare vs. KAYAK |
Search hundreds of travel sites at once for deals on flights to District of Columbia

Good to know

Low season

February Best time to beat the crowds with an average 2% drop in price.

High season

July Most popular time to fly with an average 13% increase in price.

Average price of a round-trip

$293 (avg. price over the last 2 weeks)

Good deal for a round-trip

$198 or less

FAQs for booking Seattle/Tacoma Airport to District of Columbia flights

Which airlines have a flexible cancellation policy for flights from Seattle/Tacoma Intl to District of Columbia due to COVID-19?

Which airlines apply social distancing measures on flights from Seattle/Tacoma Intl to District of Columbia due to COVID-19?

How does KAYAK find such low prices on flights from Seattle/Tacoma Airport to District of Columbia?

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle/Tacoma Airport to District of Columbia?

What is the Hacker Fare option on flights from Seattle/Tacoma Airport to District of Columbia?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle/Tacoma Airport to District of Columbia?

Top 5 airlines serving Seattle/Tacoma Intl to District of Columbia

Scores according to KAYAK customer reviews

8.2
JetBlue
Overall score based on 19,210 reviews
8.3
Boarding
8.3
Comfort
8.6
Crew
7.9
Entertainment
7.8
Food
Airline reviews
Read more about JetBlue

Book cheap flights from Seattle/Tacoma Airport to District of Columbia

Recent round-trip flight deals

8/11
Tue
nonstop
Delta
4h 49m
SEA - IAD
8/19
Wed
nonstop
Delta
5h 36m
IAD - SEA
8/11
Tue
1 stop
Cape Air
7h 28m
SEA - DCA
8/18
Tue
1 stop
Cape Air
8h 23m
DCA - SEA
8/15
Sat
1 stop
Allegiant Air
7h 56m
SEA - IAD
8/22
Sat
2 stops
Allegiant Air
10h 30m
IAD - SEA
8/11
Tue
1 stop
Spirit Airlines
7h 05m
SEA - IAD
8/15
Sat
1 stop
Spirit Airlines
10h 05m
IAD - SEA
8/14
Fri
2 stops
Sun Country Air
10h 45m
SEA - IAD
8/22
Sat
nonstop
Sun Country Air
5h 36m
IAD - SEA
8/11
Tue
nonstop
Delta
4h 49m
SEA - IAD
8/12
Wed
1 stop
Delta
8h 11m
IAD - SEA
8/8
Sat
2 stops
Spirit Airlines
10h 21m
SEA - IAD
8/19
Wed
nonstop
Spirit Airlines
5h 36m
IAD - SEA
8/16
Sun
1 stop
Allegiant Air
6h 38m
SEA - IAD
8/20
Thu
2 stops
Allegiant Air
11h 14m
IAD - SEA
8/16
Sun
nonstop
Major Airline
4h 46m
SEA - IAD
8/19
Wed
nonstop
Major Airline
5h 31m
IAD - SEA
8/9
Sun
1 stop
Delta
7h 20m
SEA - IAD
8/18
Tue
nonstop
Delta
5h 36m
IAD - SEA
7/29
Wed
1 stop
Delta
8h 28m
SEA - IAD
8/4
Tue
nonstop
Delta
5h 36m
IAD - SEA
7/31
Fri
2 stops
Multiple Airlines
37h 09m
SEA - DCA
8/3
Mon
1 stop
Multiple Airlines
9h 01m
DCA - SEA
Show more results

Recent one-way flight deals

8/3
Mon
2 stops
Multiple Airlines
41h 45m
SEA - DCA
8/1
Sat
nonstop
Delta
4h 49m
SEA - IAD
8/4
Tue
1 stop
Cape Air
7h 05m
SEA - DCA
9/16
Wed
1 stop
Sun Country Air
7h 59m
SEA - DCA
9/16
Wed
1 stop
Spirit Airlines
9h 12m
SEA - IAD
8/20
Thu
1 stop
Allegiant Air
9h 59m
SEA - IAD
8/3
Mon
2 stops
Multiple Airlines
41h 45m
SEA - DCA
8/17
Mon
2 stops
Multiple Airlines
43h 20m
SEA - DCA
8/4
Tue
2 stops
Cape Air
10h 25m
SEA - IAD
7/31
Fri
2 stops
Multiple Airlines
37h 09m
SEA - DCA
8/24
Mon
1 stop
Spirit Airlines
10h 50m
SEA - IAD
8/20
Thu
nonstop
Delta
4h 49m
SEA - IAD
8/20
Thu
1 stop
Cape Air
6h 50m
SEA - DCA
9/13
Sun
1 stop
Delta
6h 57m
SEA - DCA
9/27
Sun
2 stops
Multiple Airlines
16h 58m
SEA - DCA
8/19
Wed
2 stops
Spirit Airlines
11h 54m
SEA - DCA
7/29
Wed
2 stops
Allegiant Air
14h 56m
SEA - IAD
7/29
Wed
2 stops
Sun Country Air
20h 32m
SEA - IAD
Show more results
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

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