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Cheap flights from Portsmouth to Washington, D.C. Reagan-National Airport from £457

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DCA
23 Jul — 30 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Reagan-National

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to Reagan-National
Explore the most affordable flight options available from Portsmouth to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 June 2026.

Wed 8/709:15
SOU
-
DCA
2 stops17h 48m
Delta
Fri 24/711:47
DCA
-
SOU
2 stops15h 58m
Delta
Deal found 19/6£592
Sat 25/709:15
SOU
-
DCA
2 stops18h 44m
KLM
Tue 4/813:45
DCA
-
SOU
2 stops14h 00m
KLM
Deal found 21/6£672
Thu 6/809:15
SOU
-
DCA
2 stops16h 18m
Delta
Thu 13/811:00
DCA
-
SOU
2 stops16h 45m
Delta
Deal found 22/6£692
Thu 2/709:05
SOU
-
DCA
2 stops19h 16m
Delta
Mon 6/711:45
DCA
-
SOU
2 stops16h 00m
Delta
Deal found 20/6£769
Thu 25/620:00
SOU
-
DCA
2 stops31h 59m
Multiple Airlines
Thu 2/714:20
DCA
-
SOU
2 stops13h 20m
Multiple Airlines
Deal found 20/6£831
Wed 8/709:20
SOU
-
DCA
3 stops17h 28m
Multiple Airlines
Fri 24/712:40
DCA
-
SOU
3 stops25h 50m
Multiple Airlines
Deal found 19/6£956
Thu 2/719:55
SOU
-
DCA
3 stops30h 53m
Multiple Airlines
Mon 6/712:40
DCA
-
SOU
3 stops20h 05m
Multiple Airlines
Deal found 20/6£985
Thu 6/809:20
SOU
-
DCA
3 stops17h 28m
Multiple Airlines
Thu 13/811:00
DCA
-
SOU
2 stops17h 25m
Multiple Airlines
Deal found 22/6£1,062

Find flight deals from Portsmouth to Reagan-National

Keep the following information in mind while searching for Portsmouth to Reagan-National flight deals. Data was last updated 23 June 2026.

Round-trip from

£592

One-way from

£457

Popular in

June

Cheapest in

February

Average price

£595
Delta
  • Delta
  • 8/7-24/7
  • 4 total stops
  • 33h 46m total
  • Portsmouth to Washington, D.C.
Search Deals
8/9
  • 8/9
  • 2 total stops
  • 18h 19m total
  • Portsmouth to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£41 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth 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 858,174 searches. Data last updated 23 June 2026.
Use the filters below to find and compare flights from Portsmouth to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Wed 8/7

09:15-22:03

2 stops17h 48m

Washington, D.C. Reagan-National

Fri 24/7

11:47-08:45

2 stops15h 58m

£592
Fastest return journey

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Sat 25/7

09:15-22:59

2 stops18h 44m

Washington, D.C. Reagan-National

Tue 4/8

13:45-08:45

2 stops14h 00m

£672

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Thu 6/8

09:15-20:33

2 stops16h 18m

Washington, D.C. Reagan-National

Thu 13/8

11:00-08:45

2 stops16h 45m

£692

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Wed 8/7

09:20-21:48

3 stops17h 28m

Washington, D.C. Reagan-National

Fri 24/7

12:40-19:30

3 stops25h 50m

£956

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Thu 6/8

09:20-21:48

3 stops17h 28m

Washington, D.C. Reagan-National

Thu 13/8

11:00-09:25

2 stops17h 25m

£1,062
Cheapest one-way

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Tue 8/9

09:15-22:34

2 stops18h 19m

£457

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Mon 23/11

09:20-22:15

2 stops17h 55m

£497
Fastest single journey

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Sat 29/8

09:15-21:45

2 stops17h 30m

£1,339

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Wed 22/7

18:05-16:34

2 stops27h 29m

£1,430

SouthamptonWashington, D.C.

SOU - DCA

SOUDCA

Southampton Eastleigh

Fri 24/7

18:05-18:59

2 stops29h 54m

£1,430

Flights are sorted by cheapest return flights first.

Deals found on 20/6

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

Best time to book a flight from Portsmouth to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Portsmouth with our price prediction graph.
Estimated return 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.

Cheapflights Insights

Everything you need to know about your flight from Portsmouth to Washington, D.C. Reagan-National Airport
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Reagan-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portsmouth to Washington, D.C. Reagan-National Airport?

    Departing from Portsmouth to Washington, D.C. Reagan-National Airport will take you 17h 48m. The distance between Portsmouth and Washington, D.C. Reagan-National Airport is about 3626 mi. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Portsmouth to Reagan-National that include hotel bookings?

    Yes. In addition to deals on Portsmouth to Reagan-National flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portsmouth to Reagan-National?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Reagan-National.

  • Can I find deals for business class flights from Portsmouth to Reagan-National?

    Yes. Cheapflights offers flight deals from Portsmouth to Reagan-National by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling 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 locations
Silver Spring
Oxon Hill
Gaithersburg
Hanover
Woodbridge
Alexandria

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Alternative routes for Portsmouth to Reagan-National

See prices for flight routes from nearby airports that may be better suited for you.
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Grimsby to Baltimore flights
Grimsby to Dulles Intl flights
Norwich to Baltimore flights
East Midlands to Baltimore flights
Norwich to Dulles Intl flights
Bristol to Reagan-National flights
Doncaster to Baltimore flights
Doncaster to Dulles Intl flights

Top 5 airlines flying from Portsmouth to Reagan-National

Discover the top 5 airlines that operate flights from Portsmouth 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 858,174 searches. Data last updated 23 June 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£335Average£593FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
JetBlueCheapest£419Average£605FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
British AirwaysCheapest£435Average£541FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£442Average£537FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£547Average£596FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Portsmouth to Reagan-National?

When you search for this flight from Portsmouth to Reagan-National, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Reagan-National?

Cheapflights helps you find that perfect flight to Reagan-National from Portsmouth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Portsmouth to Reagan-National with no change fees?

Yes, we can. To see specific flights from Portsmouth to Reagan-National with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Portsmouth to Reagan-National become cheaper?

Yes, Cheapflights offers price alerts on Portsmouth to Reagan-National flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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