BWI - OPO

$230 Find Cheap Flights from Baltimore to Porto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Baltimore to Porto departing on 10/11. 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

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

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

Cheap Flights from Baltimore to Porto (BWI-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Baltimore to Porto 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 Baltimore to Porto

Mon, Nov 3 - Tue, Nov 11
Delta Logo
7:45 pm - 3:25 pmBWI-OPO
14h 40m2 stops
Delta Logo
11:10 am - 11:00 pmOPO-BWI
16h 50m2 stops
$491Delta
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Thu, Oct 23 - Tue, Nov 4
Delta Logo
5:39 pm - 3:30 pmBWI-OPO
16h 51m2 stops
Delta Logo
11:10 am - 11:02 pmOPO-BWI
16h 52m2 stops
$528Delta
Find Deal
Thu, Nov 13 - Tue, Dec 2
United Airlines Logo
10:56 am - 9:30 amBWI-OPO
17h 34m2 stops
United Airlines Logo
6:00 am - 1:50 pmOPO-BWI
36h 50m2 stops
$530United Airlines
Find Deal
Sun, Jan 11 - Sat, Jan 17
British Airways Logo
8:35 pm - 4:40 pmBWI-OPO
15h 05m1 stop
British Airways Logo
8:40 pm - 6:45 pmOPO-BWI
27h 05m2 stops
$539British Airways
Find Deal
Wed, Nov 5 - Mon, Nov 10
Multiple Airlines Logo
7:45 pm - 3:25 pmBWI-OPO
14h 40m2 stops
Multiple Airlines Logo
11:25 am - 11:00 pmOPO-BWI
16h 35m2 stops
$541Multiple Airlines
Find Deal
Sun, Jan 11 - Sat, Jan 17
British Airways Logo
8:35 pm - 8:00 pmBWI-OPO
18h 25m2 stops
British Airways Logo
8:40 pm - 6:45 pmOPO-BWI
27h 05m2 stops
$543British Airways
Find Deal
Fri, Nov 14 - Thu, Nov 27
Multiple Airlines Logo
10:56 am - 9:30 amBWI-OPO
17h 34m2 stops
Multiple Airlines Logo
4:15 pm - 5:14 pmOPO-BWI
29h 59m2 stops
$545Multiple Airlines
Find Deal
Sat, Feb 21 - Sun, Mar 1
United Airlines Logo
6:30 am - 9:30 amBWI-OPO
22h 00m2 stops
United Airlines Logo
6:00 am - 9:27 pmOPO-BWI
20h 27m2 stops
$555United Airlines
Find Deal
Sat, Oct 4 - Thu, Oct 16
PLAY Logo
6:50 pm - 8:05 pmBWI-OPO
20h 15m1 stop
PLAY Logo
9:20 pm - 5:40 pmOPO-BWI
25h 20m1 stop
$564PLAY
Find Deal
Wed, Oct 1 - Thu, Oct 9
PLAY Logo
6:50 pm - 8:20 pmBWI-OPO
20h 30m1 stop
PLAY Logo
9:20 pm - 5:40 pmOPO-BWI
25h 20m1 stop
$715PLAY
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $491 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$491
Delta
Mon 11/3Tue 11/11
BWI - OPO • 2 stops
Cheapest one-way
$230
Multiple Airlines
Sat 10/11
BWI - OPO • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Porto!
Booking Insights

KAYAK's insights & trends for Baltimore to Porto flights

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

Which airlines provide the cheapest flights from Baltimore to Porto?

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 Baltimore to Porto were found on Delta ($491) and United Airlines ($530).

Find deals

Good to know

Low seasonNovember
Cheapest flight$230
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Baltimore to Porto

When to book flights from Baltimore to Porto

Are your dates flexible? Find out the best times to travel from Baltimore to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Baltimore to Porto

  • What is the cheapest flight from Baltimore to Porto?

    In the last 3 days, the lowest price for a flight from Baltimore to Porto was $230 for a one-way ticket and $491 for a round-trip.

  • Do I need a passport to fly between Baltimore and Porto?

    A passport is required to fly from Baltimore to Porto.

  • Which airports will I be using when flying from Baltimore to Porto?

    When flying out of Baltimore you will be using Baltimore/Washington. You will be landing at Porto, also known as Porto.

  • Which aircraft models fly most regularly from Baltimore to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Baltimore to Porto?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Baltimore and Porto, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Baltimore 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 Baltimore to Porto.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Baltimore 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 Baltimore 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 Baltimore with another airline. Booking your flights between Baltimore and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Baltimore 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 Baltimore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Baltimore to Porto

 
See real verified KAYAK customer reviews for airlines flying from Baltimore to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Baltimore to Porto? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 7957 reviews
8.2Boarding
7.9Comfort
8.5Crew
7.9Entertainment
7.3Food
Airline reviews

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

8.0 ExcellentAnonymous, Sep 2025GFK - MSP
Read more Delta reviews

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Passengers need to check in big baggage instead of bringing on the plane. That cause inconvenience for everyone. Otherwise flight was good.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Quick check in. Everything went smooth. I don't know what can be done about airline food.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

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

Information on your arrival and departure airports

Baltimore (BWI)
Porto (OPO)

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