How does KAYAK find such low prices on flights from District of Columbia to Porto?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Porto.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from District of Columbia to Porto?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to District of Columbia with another airline.

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

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$296 CHEAP FLIGHTS from District of Columbia to Porto

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Flight Deals

Cheap Flights from District of Columbia to Porto

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from District of Columbia to Porto

Wed, Oct 7 - Tue, Oct 13

10:35 pm - 7:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

15h 25m1 stop Lisbon Humberto Delgado

7:00 am - 3:10 pmOPO Porto-IAD Washington, D.C. Dulles Intl

13h 10m1 stop Lisbon Humberto Delgado

$674TAP AIR PORTUGAL

Wed, Nov 25 - Mon, Nov 30

10:30 pm - 6:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

14h 30m1 stop Lisbon Humberto Delgado

6:00 pm - 2:45 pmOPO Porto-IAD Washington, D.C. Dulles Intl

25h 45m1 stop Lisbon Humberto Delgado

$675TAP AIR PORTUGAL

Fri, Oct 16 - Tue, Oct 20

10:50 pm - 11:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 10m2 stops Lisbon Humberto Delgado Madrid Barajas

9:30 pm - 3:10 pmOPO Porto-IAD Washington, D.C. Dulles Intl

22h 40m2 stops Madrid Barajas Lisbon Humberto Delgado

$679Multiple Airlines

Mon, Oct 19 - Wed, Oct 28

8:00 pm - 10:55 pmIAD Washington, D.C. Dulles Intl-OPO Porto

45h 55m2 stops Orlando London Gatwick

8:20 am - 5:20 pmOPO Porto-IAD Washington, D.C. Dulles Intl

13h 00m1 stop Madrid Barajas

$680Multiple Airlines

Wed, Nov 11 - Fri, Nov 20

5:50 pm - 9:30 amIAD Washington, D.C. Dulles Intl-OPO Porto

10h 40m1 stop Newark

6:00 am - 3:55 pmOPO Porto-IAD Washington, D.C. Dulles Intl

14h 55m1 stop Frankfurt am Main

$731United Airlines

Tue, Nov 10 - Fri, Nov 20

5:50 pm - 9:30 amIAD Washington, D.C. Dulles Intl-OPO Porto

10h 40m1 stop Newark

6:00 am - 3:55 pmOPO Porto-IAD Washington, D.C. Dulles Intl

14h 55m1 stop Frankfurt am Main

$731United Airlines

Mon, Nov 23 - Thu, Nov 26

3:00 pm - 10:35 amIAD Washington, D.C. Dulles Intl-OPO Porto

14h 35m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

11:15 am - 3:55 pmOPO Porto-IAD Washington, D.C. Dulles Intl

33h 40m1 stop Amsterdam Schiphol

$737Delta

Tue, Nov 10 - Tue, Nov 17

12:35 pm - 10:35 amIAD Washington, D.C. Dulles Intl-OPO Porto

17h 00m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

5:00 am - 3:45 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 45m1 stop Amsterdam Schiphol

$737Delta

Tue, Nov 10 - Thu, Nov 19

6:40 pm - 10:35 amIAD Washington, D.C. Dulles Intl-OPO Porto

10h 55m1 stop Paris Charles de Gaulle

11:00 am - 9:36 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 36m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

$754KLM

Fri, Oct 30 - Tue, Nov 3

3:03 pm - 8:05 amIAD Washington, D.C. Dulles Intl-OPO Porto

13h 02m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

5:00 am - 3:45 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 45m1 stop Amsterdam Schiphol

$848KLM

Recent last minute flight deals from District of Columbia to Porto

Mon, Aug 17 - Mon, Aug 31

10:35 pm - 10:55 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 20m1 stop Lisbon Humberto Delgado

10:30 pm - 3:10 pmOPO Porto-IAD Washington, D.C. Dulles Intl

21h 40m1 stop Lisbon Humberto Delgado

$760TAP AIR PORTUGAL

Fri, Aug 14 - Mon, Aug 31

10:50 pm - 7:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

15h 10m1 stop Lisbon Humberto Delgado

10:30 pm - 3:10 pmOPO Porto-IAD Washington, D.C. Dulles Intl

21h 40m1 stop Lisbon Humberto Delgado

$779TAP AIR PORTUGAL

Sun, Aug 16 - Tue, Aug 25

8:35 am - 6:55 amIAD Washington, D.C. Dulles Intl-OPO Porto

17h 20m1 stop Newark

12:15 pm - 11:50 amOPO Porto-IAD Washington, D.C. Dulles Intl

28h 35m2 stops Montreal Pierre Elliott Trudeau Intl New York LaGuardia

$962United Airlines

Sun, Aug 16 - Tue, Aug 25

5:45 pm - 9:45 amIAD Washington, D.C. Dulles Intl-OPO Porto

11h 00m1 stop Newark

12:15 pm - 11:26 amOPO Porto-IAD Washington, D.C. Dulles Intl

28h 11m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$962United Airlines

Mon, Aug 17 - Mon, Aug 24

5:40 pm - 7:00 amIAD Washington, D.C. Dulles Intl-OPO Porto

32h 20m1 stop Montreal Pierre Elliott Trudeau Intl

7:20 pm - 4:45 pmOPO Porto-IAD Washington, D.C. Dulles Intl

26h 25m1 stop Zurich

$964Multiple Airlines

Sun, Aug 16 - Tue, Aug 25

7:19 pm - 3:30 pmIAD Washington, D.C. Dulles Intl-OPO Porto

15h 11m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

5:00 am - 3:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Amsterdam Schiphol

$969Delta

Sun, Aug 16 - Thu, Aug 27

7:26 pm - 3:30 pmIAD Washington, D.C. Dulles Intl-OPO Porto

15h 04m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

5:00 am - 3:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Amsterdam Schiphol

$969Delta

Mon, Aug 17 - Mon, Aug 31

9:55 am - 7:00 amIAD Washington, D.C. Dulles Intl-OPO Porto

16h 05m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

12:50 pm - 4:45 pmOPO Porto-IAD Washington, D.C. Dulles Intl

32h 55m1 stop Zurich

$972Multiple Airlines

Fri, Aug 14 - Tue, Aug 18

10:20 pm - 10:45 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 25m2 stops Munich Franz Josef Strauss Frankfurt am Main

6:00 am - 7:25 pmOPO Porto-IAD Washington, D.C. Dulles Intl

18h 25m2 stops Frankfurt am Main Munich Franz Josef Strauss

$1,205Lufthansa

Thu, Aug 13 - Wed, Aug 19

10:20 pm - 11:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

20h 05m1 stop Munich Franz Josef Strauss

6:20 am - 4:05 pmOPO Porto-IAD Washington, D.C. Dulles Intl

14h 45m2 stops Munich Franz Josef Strauss Frankfurt am Main

$1,210Lufthansa

Useful Info

Low season	January
High season	July
Cheapest flight	$296

Best time to beat the crowds with an average 27% drop in price.

Most popular time to fly with an average 32% increase in price.

Flight from Washington Dulles Airport to Porto

How does KAYAK find such low prices on flights from District of Columbia to Porto?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Porto.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Porto?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from District of Columbia to Porto?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to District of Columbia with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to Porto?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Matosinhos

Lamego

Guimarães

Pinhao

Chaves

Viseu

Esposende

Ponte de Lima

Espinho

Baiao

Arcos de Valdevez

Santa Maria da Feira

Caminha

Mira

Penafiel

Amares

Curia

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Porto (OPO)

OPO

$296 Find Cheap Flights from District of Columbia to Porto - Compare and Save

Cheap Flights from District of Columbia to Porto

Recent round-trip flight deals from District of Columbia to Porto

Recent one-way flight deals from District of Columbia to Porto

Recent last minute flight deals from District of Columbia to Porto

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FAQs for booking flights from District of Columbia to Porto

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Everything you need to know for your flight to Porto

Information on the airport you'll fly into in Porto

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Complete your trip to Porto with a hotel stay or car rental

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Choose which airport to fly into in Porto