$399 Find Cheap Flights from Porto to Maryland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Porto to Maryland departing on 10/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Maryland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to Maryland, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to Maryland, as well as popular online travel agencies
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Flight Deals

Book Cheap Porto to Maryland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Porto to Maryland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Porto to Maryland

Wed, May 20 - Tue, Jun 2
SWISS Logo
12:15 pm - 3:30 pm
OPO
-
IAD
32h 15m
1 stop
SWISS Logo
8:20 pm - 11:25 am
IAD
-
OPO
34h 05m
1 stop
$671SWISS
Tue, Jun 16 - Sun, Jun 21
SWISS Logo
12:15 pm - 4:45 pm
OPO
-
IAD
33h 30m
1 stop
SWISS Logo
8:20 pm - 11:25 am
IAD
-
OPO
34h 05m
1 stop
$682SWISS
Wed, Jun 17 - Mon, Jun 22
Lufthansa Logo
6:00 am - 3:15 pm
OPO
-
IAD
14h 15m
1 stop
Lufthansa Logo
3:25 pm - 11:15 am
IAD
-
OPO
14h 50m
1 stop
$686Lufthansa
Thu, Sep 10 - Mon, Sep 14
Lufthansa Logo
6:00 am - 4:05 pm
OPO
-
IAD
15h 05m
1 stop
Lufthansa Logo
3:25 pm - 11:15 am
IAD
-
OPO
14h 50m
1 stop
$687Lufthansa
Mon, Jun 15 - Tue, Jun 23
Lufthansa Logo
6:00 am - 3:55 pm
OPO
-
IAD
14h 55m
1 stop
Lufthansa Logo
6:05 pm - 11:10 am
IAD
-
OPO
12h 05m
1 stop
$688Lufthansa
Thu, May 21 - Wed, Jun 3
United Airlines Logo
12:10 pm - 8:00 pm
OPO
-
IAD
12h 50m
1 stop
United Airlines Logo
8:29 am - 6:55 am
IAD
-
OPO
17h 26m
1 stop
$695United Airlines
Thu, May 21 - Wed, Jun 3
United Airlines Logo
6:00 am - 8:00 pm
OPO
-
IAD
19h 00m
1 stop
United Airlines Logo
6:33 am - 6:55 am
IAD
-
OPO
19h 22m
1 stop
$696United Airlines
Fri, May 22 - Thu, Jun 4
Delta Logo
5:00 am - 5:07 pm
OPO
-
DCA
17h 07m
2 stops
Delta Logo
11:00 am - 8:30 am
DCA
-
OPO
16h 30m
2 stops
$710Delta
Thu, May 21 - Wed, Jun 3
Delta Logo
5:00 am - 7:16 pm
OPO
-
BWI
19h 16m
2 stops
Delta Logo
1:59 pm - 10:30 am
BWI
-
OPO
15h 31m
2 stops
$714Delta
Wed, Jun 17 - Mon, Jun 22
American Airlines Logo
8:20 am - 9:30 pm
OPO
-
DCA
18h 10m
2 stops
American Airlines Logo
3:00 pm - 11:45 am
DCA
-
OPO
15h 45m
2 stops
$719American Airlines
Booking Insights

KAYAK's insights & trends for Porto to Maryland flights

Get data-powered insights and trends into flights from Porto to Maryland to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Porto to Maryland?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Porto to Maryland were found on SWISS ($682) and Lufthansa ($686).

Find deals

Good to know

Low seasonMarch
Cheapest flight$399
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Porto to Washington Dulles Airport

FAQs - booking Maryland flights

  • How does KAYAK find such low prices on flights from Porto to Maryland?

    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 Porto to Maryland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Porto to Maryland 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 Porto to Maryland?

    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 from Porto to Maryland with an airline and back with another airline.

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

    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 from Porto to Maryland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Porto to Maryland

Information on your arrival and departure airports

Porto (OPO)