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Washington DC (DCA) to Seattle (SEA) Flights from ₹14,304

Fares on this route currently start from ₹14,304. Compare live DCA to SEA prices, non-stop and connecting flights, departure times and airline choices before booking. Use the search panel to change origin, destination, passengers, cabin and trip type instantly.
DCA → SEA Approx. 3738.14 km 04 Jun 2026 Live inventory
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Showing 25 of 142 live flights
Frontier Airlines
F9-685
07:00
06/04/2026
DCA
Ronald Reagan Washington National Airport
7h 1m
1 Stop
⏱ DEN · 2h 53mDEN Airport
14:01
06/04/2026
SEA
Seattle Tacoma International Airport
₹14,304
per person
✕ Non-refundable
Frontier Airlines
F9-685
07:00
06/04/2026
DCA
Ronald Reagan Washington National Airport
27h 6m
1 Stop
⏱ DEN · 22h 53mDEN Airport
10:06
06/05/2026
+1
SEA
Seattle Tacoma International Airport
₹14,850
per person
✕ Non-refundable
American Airlines
AA-4681
17:00
06/04/2026
DCA
Ronald Reagan Washington National Airport
5h 58m
1 Stop
⏱ PHL · 1h 14mPHL Airport
22:58
06/04/2026
SEA
Seattle Tacoma International Airport
₹20,153
per person
✕ Non-refundable24 fare options
Delta Air Lines
DL-1015
07:00
06/04/2026
IAD
Ronald Reagan Washington National Airport
2h 44m
Non-stop
09:44
06/04/2026
SEA
Seattle Tacoma International Airport
₹20,628
per person
✕ Non-refundable6 fare options
Frontier Airlines
F9-4277
09:12
06/04/2026
IAD
Ronald Reagan Washington National Airport
25h 24m
1 Stop
⏱ LAS · 20h 15mLAS Airport
10:36
06/05/2026
+1
SEA
Seattle Tacoma International Airport
₹21,077
per person
✕ Non-refundable
Frontier Airlines
F9-689
18:00
06/04/2026
DCA
Ronald Reagan Washington National Airport
16h 6m
1 Stop
⏱ DEN · 11h 46mDEN Airport
10:06
06/05/2026
+1
SEA
Seattle Tacoma International Airport
₹21,077
per person
✕ Non-refundable
alaskaairlines
AS-351
06:00
06/04/2026
IAD
Ronald Reagan Washington National Airport
2h 46m
Non-stop
08:46
06/04/2026
SEA
Seattle Tacoma International Airport
₹22,582
per person
✕ Non-refundable9 fare options
Southwest Airlines
WN-1429
11:40
06/04/2026
DCA
Ronald Reagan Washington National Airport
9h 50m
2 Stops
⏱ CMH · 2h 10mCMH Airport⏱ PHX · 2h 20mPHX Airport
21:30
06/04/2026
SEA
Seattle Tacoma International Airport
₹23,404
per person
✕ Non-refundable🔥 Last 5 seats4 fare options
United Airlines
UA-2241
13:10
06/04/2026
IAD
Ronald Reagan Washington National Airport
2h 45m
Non-stop
15:55
06/04/2026
SEA
Seattle Tacoma International Airport
₹23,444
per person
✕ Non-refundable9 fare options
United Airlines
UA-2101
09:00
06/04/2026
IAD
Ronald Reagan Washington National Airport
2h 51m
Non-stop
11:51
06/04/2026
SEA
Seattle Tacoma International Airport
₹23,444
per person
✕ Non-refundable9 fare options
United Airlines
UA-2318
07:00
06/04/2026
BWI
Ronald Reagan Washington National Airport
7h 36m
1 Stop
⏱ LAX · 2h 14mLAX Airport
14:36
06/04/2026
SEA
Seattle Tacoma International Airport
₹23,914
per person
✕ Non-refundable🔥 Last 3 seats8 fare options
Delta Air Lines
DL-392
16:50
06/04/2026
DCA
Ronald Reagan Washington National Airport
7h 3m
1 Stop
⏱ LAX · 1h 36mLAX Airport
23:53
06/04/2026
SEA
Seattle Tacoma International Airport
₹24,538
per person
✕ Non-refundable2 fare options
United Airlines
UA-325
07:00
06/04/2026
IAD
Ronald Reagan Washington National Airport
7h 36m
Non-stop
14:36
06/04/2026
SEA
Seattle Tacoma International Airport
₹25,854
per person
✕ Non-refundable🔥 Last 1 seats5 fare options
United Airlines
UA-325
07:00
06/04/2026
IAD
Ronald Reagan Washington National Airport
7h 36m
1 Stop
⏱ LAX · 2h 17mLAX Airport
14:36
06/04/2026
SEA
Seattle Tacoma International Airport
₹25,995
per person
✓ Refundable🔥 Last 1 seats4 fare options
Southwest Airlines
WN-1426
10:35
06/04/2026
DCA
Ronald Reagan Washington National Airport
9h 35m
2 Stops
⏱ BNA · 0h 55mBNA Airport⏱ LAS · 3h 10mLAS Airport
20:10
06/04/2026
SEA
Seattle Tacoma International Airport
₹26,184
per person
✕ Non-refundable🔥 Last 1 seats4 fare options
United Airlines
UA-2669
06:33
06/04/2026
IAD
Ronald Reagan Washington National Airport
5h 24m
1 Stop
⏱ EWR · 0h 58mEWR Airport
11:57
06/04/2026
SEA
Seattle Tacoma International Airport
₹26,422
per person
✓ Refundable6 fare options
Frontier Airlines
F9-687
13:59
06/04/2026
DCA
Ronald Reagan Washington National Airport
24h 2m
1 Stop
⏱ DEN · 20h 5mDEN Airport
14:01
06/05/2026
+1
SEA
Seattle Tacoma International Airport
₹26,829
per person
✕ Non-refundable🔥 Last 3 seats
Frontier Airlines
F9-687
13:59
06/04/2026
DCA
Ronald Reagan Washington National Airport
20h 7m
1 Stop
⏱ DEN · 16h 5mDEN Airport
10:06
06/05/2026
+1
SEA
Seattle Tacoma International Airport
₹26,829
per person
✕ Non-refundable
Frontier Airlines
F9-689
18:00
06/04/2026
DCA
Ronald Reagan Washington National Airport
20h 1m
1 Stop
⏱ DEN · 15h 46mDEN Airport
14:01
06/05/2026
+1
SEA
Seattle Tacoma International Airport
₹26,829
per person
✕ Non-refundable🔥 Last 3 seats
alaskaairlines
AS-375
09:00
06/04/2026
IAD
Ronald Reagan Washington National Airport
2h 45m
Non-stop
11:45
06/04/2026
SEA
Seattle Tacoma International Airport
₹27,074
per person
✕ Non-refundable9 fare options
alaskaairlines
AS-737
17:35
06/04/2026
IAD
Ronald Reagan Washington National Airport
2h 54m
Non-stop
20:29
06/04/2026
SEA
Seattle Tacoma International Airport
₹27,074
per person
✕ Non-refundable9 fare options
American Airlines
AA-7484
06:00
06/04/2026
IAD
Ronald Reagan Washington National Airport
2h 46m
Non-stop
08:46
06/04/2026
SEA
Seattle Tacoma International Airport
₹27,143
per person
✕ Non-refundable🔥 Last 5 seats4 fare options
Southwest Airlines
WN-4476
12:25
06/04/2026
BWI
Ronald Reagan Washington National Airport
8h 35m
1 Stop
⏱ SMF · 4h 0mSMF Airport
21:00
06/04/2026
SEA
Seattle Tacoma International Airport
₹27,833
per person
✕ Non-refundable2 fare options
Southwest Airlines
WN-194
11:45
06/04/2026
DCA
Ronald Reagan Washington National Airport
9h 45m
2 Stops
⏱ ATL · 2h 5mATL Airport⏱ PHX · 2h 0mPHX Airport
21:30
06/04/2026
SEA
Seattle Tacoma International Airport
₹28,197
per person
✕ Non-refundable🔥 Last 1 seats4 fare options
American Airlines
AA-365
05:00
06/04/2026
DCA
Ronald Reagan Washington National Airport
4h 50m
1 Stop
⏱ CLT · 0h 44mCLT Airport
09:50
06/04/2026
SEA
Seattle Tacoma International Airport
₹28,315
per person
✕ Non-refundable21 fare options
😕 No flights match your filters.
Washington DC (DCA)
📍 Ronald Reagan Washington National Airport
🌍 United States
🕐 GMT -5
📐 Latitude: 38.8521
📐 Longitude: -77.037697
Seattle (SEA)
📍 Seattle Tacoma International Airport
🌍 United States
🕐 GMT -8
📐 Latitude: 47.449001
📐 Longitude: -122.308998

✈ Distance: Washington DC,USA to Seattle,USA3738.14 km

📅 Results on this page are loaded for 04 Jun 2026. Click View all flights for the complete live search.

Washington DC to Seattle — what to expect when booking

The DCA–SEA route is served by multiple carriers throughout the year. Fares on this route can move quickly — a price available now may not be there 30 minutes later.

If your dates are flexible, try shifting your departure by a day or two using the date strip above. Mid-week departures often show lower base fares compared to weekend starts on many routes.

The distance between Washington DC,USA and Seattle,USA is approximately 3738.14 km.

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❓ Frequently asked questions — Washington DC to Seattle flights

Generally yes — fares on most routes are most competitive around 4–6 weeks before departure. Booking earlier usually means better availability and a lower base fare when your dates are fixed.

The straight-line distance between Washington DC,USA (DCA) and Seattle,USA (SEA) is approximately 3738.14 km. Actual flying distance may vary slightly depending on routing.

Non-stop availability on this route varies by airline schedule and season. Use the filters below to quickly check whether direct options are available on your selected date.

Mid-week departures often show lower prices than weekend travel on many routes. Use the date strip above to compare nearby days quickly.