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DCA → SEAApprox. 3738.14 km08 May 2026Live inventory
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Showing 25
of 125
live flights
American Airlines
AA-5601
13:45
05/08/2026
DCA
Ronald Reagan Washington National Airport
7h 38m
1 Stop
⏱ PHL · 3h 8mPHL Airport
21:23
05/08/2026
SEA
Seattle Tacoma International Airport
₹17,326
per person
✕ Non-refundable12 fare options
Delta Air Lines
DL-1015
07:00
05/08/2026
IAD
Ronald Reagan Washington National Airport
2h 44m
Non-stop
09:44
05/08/2026
SEA
Seattle Tacoma International Airport
₹19,289
per person
✕ Non-refundable2 fare options
Southwest Airlines
WN-2440
17:55
05/08/2026
IAD
Ronald Reagan Washington National Airport
5h 35m
1 Stop
⏱ DEN · 1h 35mDEN Airport
23:30
05/08/2026
SEA
Seattle Tacoma International Airport
₹20,199
per person
✓ Refundable🔥 Last 3 seats4 fare options
United Airlines
UA-1061
08:20
05/08/2026
DCA
Ronald Reagan Washington National Airport
7h 28m
1 Stop
⏱ ORD · 3h 29mORD Airport
15:48
05/08/2026
SEA
Seattle Tacoma International Airport
₹22,094
per person
✕ Non-refundable🔥 Last 2 seats6 fare options
United Airlines
UA-2497
17:15
05/08/2026
IAD
Ronald Reagan Washington National Airport
6h 44m
1 Stop
⏱ ORD · 2h 47mORD Airport
23:59
05/08/2026
SEA
Seattle Tacoma International Airport
₹22,094
per person
✕ Non-refundable🔥 Last 1 seats
American Airlines
AA-1328
19:50
05/08/2026
DCA
Ronald Reagan Washington National Airport
4h 46m
1 Stop
⏱ ORD · 0h 39mORD Airport
00:36
05/09/2026
+1
SEA
Seattle Tacoma International Airport
₹22,513
per person
✕ Non-refundable13 fare options
United Airlines
UA-796
16:10
05/08/2026
IAD
Ronald Reagan Washington National Airport
7h 19m
1 Stop
⏱ SFO · 1h 39mSFO Airport
23:29
05/08/2026
SEA
Seattle Tacoma International Airport
₹23,028
per person
✕ Non-refundable4 fare options
United Airlines
UA-754
18:40
05/08/2026
IAD
Ronald Reagan Washington National Airport
6h 32m
1 Stop
⏱ SFO · 0h 46mSFO Airport
01:12
05/09/2026
+1
SEA
Seattle Tacoma International Airport
₹23,438
per person
✕ Non-refundable4 fare options
United Airlines
UA-1381
14:35
05/08/2026
DCA
Ronald Reagan Washington National Airport
8h 17m
1 Stop
⏱ IAH · 2h 45mIAH Airport
22:52
05/08/2026
SEA
Seattle Tacoma International Airport
₹23,438
per person
✕ Non-refundable🔥 Last 1 seats6 fare options
Southwest Airlines
WN-1748
19:45
05/08/2026
DCA
Ronald Reagan Washington National Airport
4h 20m
1 Stop
⏱ MDW · 0h 45mMDW Airport
00:05
05/09/2026
+1
SEA
Seattle Tacoma International Airport
₹23,560
per person
✕ Non-refundable🔥 Last 1 seats5 fare options
American Airlines
AA-3504
19:52
05/08/2026
BWI
Ronald Reagan Washington National Airport
4h 44m
1 Stop
⏱ ORD · 0h 37mORD Airport
00:36
05/09/2026
+1
SEA
Seattle Tacoma International Airport
₹23,900
per person
✕ Non-refundable🔥 Last 1 seats5 fare options
American Airlines
AA-1927
19:17
05/08/2026
BWI
Ronald Reagan Washington National Airport
5h 27m
1 Stop
⏱ DFW · 0h 40mDFW Airport
00:44
05/09/2026
+1
SEA
Seattle Tacoma International Airport
₹23,912
per person
✕ Non-refundable4 fare options
United Airlines
UA-382
12:40
05/08/2026
DCA
Ronald Reagan Washington National Airport
10h 49m
1 Stop
⏱ SFO · 1h 53mSFO Airport
23:29
05/08/2026
SEA
Seattle Tacoma International Airport
₹23,929
per person
✕ Non-refundable5 fare options
United Airlines
UA-382
12:40
05/08/2026
DCA
Ronald Reagan Washington National Airport
12h 32m
1 Stop
⏱ SFO · 3h 30mSFO Airport
01:12
05/09/2026
+1
SEA
Seattle Tacoma International Airport
₹23,929
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-3438
11:35
05/08/2026
DCA
Ronald Reagan Washington National Airport
7h 30m
1 Stop
⏱ DEN · 1h 20mDEN Airport
19:05
05/08/2026
SEA
Seattle Tacoma International Airport
₹24,056
per person
✕ Non-refundable🔥 Last 2 seats4 fare options
Southwest Airlines
WN-1315
11:40
05/08/2026
DCA
Ronald Reagan Washington National Airport
8h 45m
1 Stop
⏱ LAS · 2h 30mLAS Airport
20:25
05/08/2026
SEA
Seattle Tacoma International Airport
₹24,056
per person
✕ Non-refundable🔥 Last 1 seats4 fare options
Southwest Airlines
WN-1747
15:35
05/08/2026
DCA
Ronald Reagan Washington National Airport
8h 30m
1 Stop
⏱ MDW · 4h 50mMDW Airport
00:05
05/09/2026
+1
SEA
Seattle Tacoma International Airport
₹24,084
per person
✕ Non-refundable🔥 Last 4 seats4 fare options
United Airlines
UA-2101
09:00
05/08/2026
IAD
Ronald Reagan Washington National Airport
2h 48m
Non-stop
11:48
05/08/2026
SEA
Seattle Tacoma International Airport
₹24,126
per person
✕ Non-refundable🔥 Last 5 seats4 fare options
United Airlines
UA-326
17:55
05/08/2026
IAD
Ronald Reagan Washington National Airport
2h 58m
Non-stop
20:53
05/08/2026
SEA
Seattle Tacoma International Airport
₹24,126
per person
✕ Non-refundable🔥 Last 5 seats4 fare options
United Airlines
UA-2148
18:00
05/08/2026
DCA
Ronald Reagan Washington National Airport
5h 59m
1 Stop
⏱ ORD · 1h 58mORD Airport
23:59
05/08/2026
SEA
Seattle Tacoma International Airport
₹24,436
per person
✕ Non-refundable6 fare options
United Airlines
UA-654
17:00
05/08/2026
DCA
Ronald Reagan Washington National Airport
6h 59m
1 Stop
⏱ ORD · 3h 0mORD Airport
23:59
05/08/2026
SEA
Seattle Tacoma International Airport
₹24,436
per person
✕ Non-refundable6 fare options
United Airlines
UA-2396
08:20
05/08/2026
IAD
Ronald Reagan Washington National Airport
7h 52m
1 Stop
⏱ EWR · 3h 14mEWR Airport
16:12
05/08/2026
SEA
Seattle Tacoma International Airport
₹24,436
per person
✕ Non-refundable🔥 Last 2 seats3 fare options
United Airlines
UA-2497
17:15
05/08/2026
IAD
Ronald Reagan Washington National Airport
5h 32m
1 Stop
⏱ ORD · 1h 31mORD Airport
22:47
05/08/2026
SEA
Seattle Tacoma International Airport
₹24,436
per person
✕ Non-refundable🔥 Last 1 seats3 fare options
United Airlines
UA-2649
15:15
05/08/2026
IAD
Ronald Reagan Washington National Airport
7h 32m
1 Stop
⏱ ORD · 3h 34mORD Airport
22:47
05/08/2026
SEA
Seattle Tacoma International Airport
₹24,436
per person
✕ Non-refundable3 fare options
United Airlines
UA-599
17:20
05/08/2026
IAD
Ronald Reagan Washington National Airport
5h 39m
1 Stop
⏱ DEN · 1h 29mDEN Airport
22:59
05/08/2026
SEA
Seattle Tacoma International Airport
₹24,436
per person
✕ Non-refundable🔥 Last 4 seats
😕 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,USA — 3738.14 km
📅 Results on this page are loaded for 08 May 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.
Before you book
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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.