BWI - OPO

$346 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 10/21. 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 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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Everything you should know

Cheapest round-trip
$748
Typical prices: $533-$525
Delta
Sun 11/15Wed 11/25
BWI - OPO • 2 stops
Cheapest one-way
$346
Delta
Wed 10/21
BWI - OPO • 2 stops
Top airlines
Delta
Cheapest • from $748 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Baltimore and Porto. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Newark (EWR)
Cheapest • Avg $992 (round-trip)
Newark (EWR)
Shortest trip • 10h 45m (one-way)
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 100% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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!
Flight Deals
Booking Insights
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

Sun, Nov 15 - Wed, Nov 25
Delta Logo
1:00 pm - 10:30 am
BWI
-
OPO
16h 30m
2 stops
Delta Logo
11:15 am - 11:46 pm
OPO
-
BWI
17h 31m
2 stops
$748Delta
Tue, Nov 3 - Tue, Nov 10
Delta Logo
1:00 pm - 10:30 am
BWI
-
OPO
16h 30m
2 stops
Delta Logo
11:25 am - 10:55 pm
OPO
-
BWI
16h 30m
2 stops
$755Delta
Mon, Nov 23 - Tue, Dec 1
Delta Logo
9:00 am - 10:30 am
BWI
-
OPO
20h 30m
2 stops
Delta Logo
5:00 am - 10:55 pm
OPO
-
BWI
22h 55m
2 stops
$777Delta
Wed, Oct 28 - Tue, Nov 3
Multiple Airlines Logo
9:35 pm - 5:50 pm
BWI
-
OPO
16h 15m
1 stop
Multiple Airlines Logo
8:40 pm - 7:30 pm
OPO
-
BWI
27h 50m
2 stops
$792Multiple Airlines
Mon, Nov 2 - Mon, Nov 9
United Airlines Logo
10:45 am - 9:30 am
BWI
-
OPO
17h 45m
2 stops
United Airlines Logo
12:35 pm - 12:38 am
OPO
-
BWI
17h 03m
2 stops
$805United Airlines
Fri, Oct 2 - Wed, Oct 14
United Airlines Logo
7:10 pm - 9:45 am
BWI
-
OPO
57h 35m
2 stops
United Airlines Logo
11:20 am - 8:57 pm
OPO
-
BWI
38h 37m
2 stops
$806United Airlines
Mon, Sep 21 - Tue, Sep 29
Delta Logo
6:20 pm - 3:25 pm
BWI
-
OPO
16h 05m
2 stops
Delta Logo
5:00 am - 5:27 pm
OPO
-
BWI
17h 27m
2 stops
$807Delta
Wed, Oct 28 - Tue, Nov 3
Multiple Airlines Logo
10:50 am - 7:40 am
BWI
-
OPO
16h 50m
2 stops
Multiple Airlines Logo
8:20 am - 6:45 pm
OPO
-
BWI
15h 25m
2 stops
$808Multiple Airlines
Wed, Nov 11 - Wed, Nov 18
British Airways Logo
8:35 pm - 5:50 pm
BWI
-
OPO
16h 15m
1 stop
British Airways Logo
6:35 pm - 6:45 pm
OPO
-
BWI
29h 10m
1 stop
$811British Airways
Wed, Oct 28 - Tue, Nov 3
British Airways Logo
9:35 pm - 5:50 pm
BWI
-
OPO
16h 15m
1 stop
British Airways Logo
8:20 am - 6:45 pm
OPO
-
BWI
15h 25m
2 stops
$815British Airways
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.

How much is a round-trip flight from Baltimore to Porto?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Baltimore to Porto departing in November.

What is the cheapest month to fly from Baltimore to Porto?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Baltimore to Porto, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Baltimore to Porto is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are April and July, where the average cost of round-trip tickets is $4,242 and $969 respectively.

Find deals

Good to know

Low seasonAugust
Cheapest flight$346
Best time to beat the crowds with an average 52% drop in price.
Most popular time to fly and prices are also 37% 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 $346 for a one-way ticket and $748 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?

    SkyTeam is the only airline alliance operating flights between Baltimore and Porto.

  • 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 8423 reviews
8.5Crew
7.2Food
7.8Entertainment
7.8Comfort
8.1Boarding
Airline reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

6.0 GoodAnonymous, May 2026
ATL - ECP
Read more Delta reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

The crew were efficient. The pilots seemed professional. It was a bit chilly in our seats. The sheet provided weren’t very helpful.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

Planes were clean, no water or snacks on either flight.

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

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

Information on your arrival and departure airports

Baltimore (BWI)
Porto (OPO)