$164+ Cheap flights from Seattle (SEA) to Reagan-National (DCA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DCA
Dec 4 — Dec 111
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Reagan-National with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Washington, D.C. Reagan-National are usually found in January or March, booked 81 days in advance, depart on a Friday or Thursday and return on a Wednesday
Cheap flight deals from Seattle to Reagan-National
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to Reagan-NationalExplore the most affordable flight options available from Seattle to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 4, 2026.
Explore the most affordable flight options available from Seattle to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 4, 2026.
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:20 am -
Nonstop4h 46m
Wed 12/94:25 pm -
Nonstop6h 20m
Deal found 11/3![Delta logo]()
$297
This CheapOair deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/24:58 pm -
1 stop20h 54m
Wed 12/97:00 am -
1 stop11h 43m
Deal found 11/4![Frontier logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/264:37 pm -
1 stop17h 22m
Mon 12/77:00 am -
1 stop11h 43m
Deal found 11/4![Frontier logo]()
$299
This Cheapflightsfares deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/44:58 pm -
1 stop16h 57m
Sun 12/66:00 pm -
1 stop24h 43m
Deal found 11/4![Frontier logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:37 pm -
1 stop17h 22m
Thu 12/36:00 pm -
1 stop24h 40m
Deal found 10/31![Frontier logo]()
$301
This Mytrip deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:02 pm -
Nonstop4h 57m
Wed 12/98:00 am -
Nonstop6h 17m
Deal found 11/4![Alaska Airlines logo]()
$304
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/310:40 pm -
1 stop7h 35m
Sun 12/64:25 pm -
Nonstop6h 20m
Deal found 11/2![Delta logo]()
$307
This Trip.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:58 pm -
1 stop26h 01m
Sat 12/127:00 am -
1 stop11h 43m
Deal found 11/1![Frontier logo]()
$309
This Trip.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:58 pm -
1 stop16h 57m
Thu 12/101:40 pm -
1 stop29h 03m
Deal found 11/4![Frontier logo]()
$310
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/31:45 pm -
1 stop7h 02m
Mon 12/76:59 pm -
1 stop7h 54m
Deal found 11/3![Delta logo]()
$317
Best flights from Seattle to Reagan-NationalDiscover carefully curated flight deals from Seattle to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 4, 2026.
Discover carefully curated flight deals from Seattle to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 4, 2026.
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/411:15 pm -
1 stop9h 19m
Fri 12/114:25 pm -
Nonstop6h 20m
Deal found 11/3![Delta logo]()
$307
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:00 am -
1 stop9h 15m
Tue 12/155:10 pm -
1 stop8h 33m
Deal found 11/3![United Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/39:10 am -
2 stops11h 40m
Wed 12/99:00 am -
2 stops11h 50m
Deal found 10/31![Southwest logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/178:00 am -
Nonstop5h 06m
Mon 1/45:00 pm -
Nonstop6h 10m
Deal found 11/4![Alaska Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:20 am -
Nonstop4h 46m
Wed 12/94:25 pm -
Nonstop6h 20m
Deal found 11/4![Delta logo]()
$307
This Southwest deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/95:40 am -
2 stops9h 20m
Sun 12/134:25 pm -
2 stops9h 40m
Deal found 11/1![Southwest logo]()
$327
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:20 am -
Nonstop4h 46m
Fri 12/114:25 pm -
Nonstop6h 20m
Deal found 11/4![Delta logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/318:00 am -
Nonstop5h 06m
Tue 1/195:05 pm -
1 stop8h 23m
Deal found 10/31![Alaska Airlines logo]()
$407
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/185:00 am -
1 stop6h 54m
Sun 2/216:05 pm -
1 stop7h 54m
Deal found 11/1![United Airlines logo]()
$432
This Alaska Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/152:02 pm -
Nonstop4h 57m
Tue 12/225:00 pm -
Nonstop6h 10m
Deal found 10/31![Alaska Airlines logo]()
$482
This Delta deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/21:30 pm -
1 stop6h 29m
Tue 1/194:48 pm -
Nonstop6h 05m
Deal found 10/31![Delta logo]()
$457
This Southwest deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/89:10 am -
2 stops9h 45m
Tue 12/151:00 pm -
2 stops12h 20m
Deal found 11/3![Southwest logo]()
$515
Last-minute flights from Seattle to Reagan-NationalDiscover last-minute flight deals from Seattle to Reagan-National. Data last updated November 4, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Reagan-National. Data last updated November 4, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:37 pm -
1 stop17h 22m
Thu 12/36:00 pm -
1 stop24h 40m
Deal found 10/31![Frontier logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/264:37 pm -
1 stop17h 22m
Tue 12/86:00 pm -
1 stop24h 43m
Deal found 11/4![Frontier logo]()
$299
This CheapOair deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/24:58 pm -
1 stop20h 54m
Wed 12/97:00 am -
1 stop11h 43m
Deal found 11/4![Frontier logo]()
$298
This Alaska Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:02 pm -
Nonstop4h 57m
Mon 12/75:05 pm -
Nonstop6h 17m
Deal found 11/4![Alaska Airlines logo]()
$297
This Mytrip deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:02 pm -
Nonstop4h 57m
Wed 12/98:00 am -
Nonstop6h 17m
Deal found 11/4![Alaska Airlines logo]()
$304
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:20 am -
Nonstop4h 46m
Thu 12/104:25 pm -
Nonstop6h 20m
Deal found 11/4![Delta logo]()
$307
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/31:36 pm -
1 stop6h 58m
Wed 12/94:25 pm -
Nonstop6h 20m
Deal found 11/3![Delta logo]()
$308
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:00 am -
1 stop7h 09m
Sun 12/66:25 am -
1 stop8h 19m
Deal found 11/3![United Airlines logo]()
$317
This Cheapflightsfares deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/44:58 pm -
1 stop16h 57m
Sun 12/66:00 pm -
1 stop24h 43m
Deal found 11/4![Frontier logo]()
$300
This Trip.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:58 pm -
1 stop26h 01m
Sat 12/127:00 am -
1 stop11h 43m
Deal found 11/1![Frontier logo]()
$309
This Trip.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:58 pm -
1 stop16h 57m
Thu 12/101:40 pm -
1 stop29h 03m
Deal found 11/4![Frontier logo]()
$310
One-way flights from Seattle to Reagan-NationalSearch for one-way flight options from Seattle to Reagan-National. Find affordable one-way fares based on user searches. Data last updated November 4, 2026.
Search for one-way flight options from Seattle to Reagan-National. Find affordable one-way fares based on user searches. Data last updated November 4, 2026.
This Southwest deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:30 am -
1 stop6h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Southwest logo]()
$164
This Alaska Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:00 am -
Nonstop5h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Alaska Airlines logo]()
$169
This Trip.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:02 pm -
Nonstop4h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Alaska Airlines logo]()
$171
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:20 am -
Nonstop4h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Delta logo]()
$174
This American Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/611:39 pm -
1 stop9h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![American Airlines logo]()
$184
This United Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1211:59 pm -
2 stops14h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![United Airlines logo]()
$189
This KAYAK deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:20 am -
Nonstop4h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Delta logo]()
$190
This Super.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:27 pm -
1 stop16h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$191
This Cheapflightsfares deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:37 pm -
1 stop17h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$194
Find flight deals from Seattle to Reagan-National
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Reagan-National (DCA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $297 (Delta) |
One-way from | $169 (Alaska Airlines) |
Popular in | September |
Cheapest in | January |
Average price | $451 |
Good round-trip deal | $399 or less |
Good one-way deal | $233 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Reagan-National 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, Cheapflights users made 7,457,451 searches. Data last updated November 4, 2026.
Use the filters below to find and compare flights from Seattle to Washington, D.C. Reagan-National Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleWashington, D.C.
SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National
SEADCA
Seattle/Tacoma Intl
Thu 12/3
6:30 am-4:15 pm
1 stop6h 45m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$164
SeattleWashington, D.C.
SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National
SEADCA
Seattle/Tacoma Intl
Sat 12/26
1:59 pm-9:59 pm
Nonstop5h 00m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$209
SeattleWashington, D.C.
SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National
SEADCA
Seattle/Tacoma Intl
Mon 2/22
7:00 am-9:00 pm
1 stop11h 00m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$219
Quickest round-trip
SeattleWashington, D.C.
SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National
SEADCA
Seattle/Tacoma Intl
Mon 2/22
7:25 am-3:20 pm
Nonstop4h 55m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$229
SeattleWashington, D.C.
SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National
SEADCA
Seattle/Tacoma Intl
Mon 2/15
6:15 am-3:50 pm
1 stop6h 35m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$241
SeattleWashington, D.C.
SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National
SEADCA
Seattle/Tacoma Intl
Sun 12/27
11:14 pm-8:53 am
1 stop6h 39m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$259
SeattleWashington, D.C.
SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National
SEADCA
Seattle/Tacoma Intl
Sat 12/26
11:14 pm-8:53 am
1 stop6h 39m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$259
SeattleWashington, D.C.
SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National
SEADCA
Seattle/Tacoma Intl
Wed 3/24
5:55 am-4:35 pm
1 stop7h 40m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$269
SeattleWashington, D.C.
SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National
SEADCA
Seattle/Tacoma Intl
Wed 4/7
6:00 am-9:00 pm
1 stop12h 00m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$269
SeattleWashington, D.C.
SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National
SEADCA
Seattle/Tacoma Intl
Sat 5/1
8:15 am-9:00 pm
1 stop9h 45m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$269
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Seattle to Reagan-National
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Reagan-National in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Washington, D.C. Reagan-National Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Washington, D.C. Reagan-National Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Washington, D.C. Reagan-National Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Washington, D.C. Reagan-National Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Washington, D.C. Reagan-National Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Reagan-National
Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Seattle with our price prediction graph.
SEA-DCA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
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Everything you need to know about your flight from Seattle to Washington, D.C. Reagan-National Airport
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How far ahead should I book a flight from Seattle to Washington, D.C. Reagan-National Airport?
The price you pay for your flight from Seattle to Washington, D.C. Reagan-National Airport may vary depending on when you book. For the best chance of a lower fare, look to book 80 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Washington, D.C. Reagan-National Airport?
Currently, January is the cheapest month in which you can book a flight from Seattle to Washington, D.C. Reagan-National Airport (average of $357). Flying from Seattle to Washington, D.C. Reagan-National Airport in September is currently the most expensive (average of $627). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to DCA?
Find hourly flight availability from Seattle to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 4, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Washington, D.C. Reagan-National Airport as you normally would.
What’s the top layover airport for flights from Seattle to Washington, D.C. Reagan-National Airport?
Share of 1-stop round-trip flights from Seattle to Washington, D.C. Reagan-National Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Charlotte (CLT) – chosen by Cheapflights users on 50% of 1-stop itineraries from Seattle to Washington, D.C. Reagan-National Airport on Cheapflights.
What’s the cheapest layover airport for flights from Seattle to Washington, D.C. Reagan-National Airport?
Average round-trip fare for 1-stop flights from Seattle to Washington, D.C. Reagan-National Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $294.
What’s the fastest layover option from Seattle to Washington, D.C. Reagan-National Airport?
Shortest average travel time for 1-stop one-way flights from Seattle to Washington, D.C. Reagan-National Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Charlotte (CLT) have the shortest average one-way travel time for 1-stop routes: 7h 44m.
Which airport typically offers the quickest layover for flights from Seattle to Washington, D.C. Reagan-National Airport?
Average layover duration for 1-stop one-way flights from Seattle to Washington, D.C. Reagan-National Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Charlotte (CLT) offer the fastest connection on this route, with an average layover time of 0h 50m.
The best insider tips for Seattle to Washington, D.C. Reagan-National Airport flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Washington, D.C. Reagan-National Airport trip
Our travel experts
Reviews of airlines servicing Reagan-National
Get insights into the airlines that provide service to Reagan-National. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Reagan-National. Reviews last updated November 4, 2026.
Read reviews from past customers who have flown Alaska Airlines,Delta, andUnited Airlines from Seattle to Washington, D.C. Reagan-National Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Entertainment
7.0
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Entertainment
7.0
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Entertainment
7.0
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Entertainment
7.0
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Entertainment
7.0
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Entertainment
7.0
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Related info for your journey
Find useful and relevant information for your journey from Seattle to Reagan-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Washington, D.C. Reagan-National Airport?
Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locationsAlexandria
Woodbridge
Arlington
Lanham
Reston
Herndon
Hyattsville
Springfield
Fredericksburg
Falls Church
Towson
Silver Spring
Rockville
Oxon Hill
Laurel
Clinton
Hunt Valley
Owings Mills
Waldorf
Colonial Beach
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Seattle and Reagan-National flights
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Top 6 airlines flying from Seattle to Reagan-National
Discover the top 6 airlines that operate flights from Seattle to Reagan-National. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$163 | Average$406 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$181 | Average$302 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$206 | Average$559 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$264 | Average$470 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$264 | Average$556 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$286 | Average$468 | FlexibilityNo cancel fee | On-time69% |