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Portsmouth

$774+ Cheap flights from Baltimore (BWI) to Portsmouth, England

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — LHR
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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Find flight deals from Baltimore to Portsmouth

Cheapest flights from Baltimore to Portsmouth
Explore the most affordable flight options available from Baltimore to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 2, 2025.

This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/245:34 pmBWI - SOU
2 stops18h 26mDelta
Thu 12/48:50 amSOU - BWI
2 stops19h 13mDelta
Deal found 11/1$774
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:00 pmBWI - SOU
2 stops39h 50mDelta
Tue 1/69:25 amSOU - BWI
2 stops38h 47mDelta
Deal found 11/2$910
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/244:49 pmBWI - SOU
2 stops34h 16mDelta
Tue 1/65:30 pmSOU - BWI
2 stops30h 42mDelta
Deal found 11/2$916
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:59 pmBWI - SOU
2 stops32h 51mDelta
Tue 1/69:25 amSOU - BWI
2 stops38h 47mDelta
Deal found 11/2$938
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:00 amBWI - SOU
2 stops30h 00mDelta
Tue 1/65:30 pmSOU - BWI
2 stops30h 42mDelta
Deal found 11/2$1,045
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/172:41 pmBWI - SOU
2 stops21h 44mDelta
Wed 12/248:40 amSOU - BWI
2 stops19h 52mDelta
Deal found 11/2$1,098
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:00 pmBWI - SOU
2 stops37h 50mDelta
Wed 12/318:40 amSOU - BWI
2 stops30h 37mDelta
Deal found 11/2$1,123
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/222:00 pmBWI - SOU
2 stops46h 00mDelta
Tue 1/69:25 amSOU - BWI
2 stops38h 47mDelta
Deal found 11/2$1,125
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/244:49 pmBWI - SOU
2 stops34h 16mDelta
Wed 12/318:40 amSOU - BWI
2 stops20h 55mDelta
Deal found 11/2$1,129
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:00 amBWI - SOU
2 stops30h 00mDelta
Wed 12/318:40 amSOU - BWI
2 stops20h 55mDelta
Deal found 11/2$1,257
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:59 pmBWI - SOU
2 stops17h 01mDelta
Wed 12/318:40 amSOU - BWI
2 stops20h 55mDelta
Deal found 11/2$1,310
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:59 pmBWI - SOU
2 stops41h 01mDelta
Wed 12/318:40 amSOU - BWI
2 stops20h 55mDelta
Deal found 11/2$1,337

Cheap flight deals from Baltimore to Portsmouth

Keep the following information in mind while searching for Baltimore to Portsmouth flight deals. Data was last updated November 2, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$774
(Delta)

Popular in

June

Cheapest in

September

Average price

$744
Provider with most accurate pricing for Washington, D.C. (WAS)-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-London (LON) flights.
Search Deals
From Baltimore/Washington to Portsmouth
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($93 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore to Portsmouth 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 2,558,603 searches. Data last updated November 2, 2025.
Use the filters below to find and compare flights from Baltimore to Portsmouth that are best for you.

Fly from

Baltimore

Fly to

Portsmouth

Route

Depart

Return

Price

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Mon 11/24

5:34 pm-5:00 pm

2 stops18h 26m

Southampton Eastleigh

Thu 12/4

8:50 am-11:03 pm

2 stops19h 13m

$774

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Tue 11/25

11:38 am-8:10 am

2 stops15h 32m

Southampton Eastleigh

Thu 12/4

8:50 am-11:03 pm

2 stops19h 13m

$774

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Thu 11/27

5:05 pm-5:00 pm

2 stops18h 55m

Southampton Eastleigh

Thu 12/4

8:50 am-10:08 pm

2 stops18h 18m

$774

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Wed 4/22

11:00 am-8:45 am

2 stops16h 45m

Southampton Eastleigh

Sun 4/26

9:20 am-12:15 am

2 stops43h 55m

$798

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Wed 4/22

10:00 am-5:00 pm

2 stops26h 00m

Southampton Eastleigh

Sun 4/26

5:35 pm-10:54 pm

2 stops34h 19m

$798

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Thu 12/25

12:00 pm-8:50 am

2 stops39h 50m

Southampton Eastleigh

Tue 1/6

9:25 am-7:12 pm

2 stops38h 47m

$910

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Tue 12/23

6:00 am-5:00 pm

2 stops30h 00m

Southampton Eastleigh

Tue 1/6

5:30 pm-7:12 pm

2 stops30h 42m

$1,045

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Wed 12/17

2:41 pm-5:25 pm

2 stops21h 44m

Southampton Eastleigh

Wed 12/24

8:40 am-11:32 pm

2 stops19h 52m

$1,098

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Thu 12/25

2:00 pm-8:50 am

2 stops37h 50m

Southampton Eastleigh

Wed 12/31

8:40 am-10:17 am

2 stops30h 37m

$1,123

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Mon 12/22

2:00 pm-5:00 pm

2 stops46h 00m

Southampton Eastleigh

Tue 1/6

9:25 am-7:12 pm

2 stops38h 47m

$1,125

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 11 results
1
2

Best time to book a flight from Baltimore to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Baltimore with our price prediction graph.
Estimated round-trip 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 Baltimore to Portsmouth

What is the cheapest month to book a flight from Baltimore to Portsmouth?

Currently, March is the cheapest month in which you can book a flight from Baltimore to Portsmouth (average of $31). Flying from Baltimore to Portsmouth in June is currently the most expensive (average of $748). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BWI to P0R?

Find hourly flight availability from Baltimore to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 2, 2025.

A simple way to save on the total cost of your ticket is to fly from Baltimore to Portsmouth in the afternoon. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight at noon.

Related info for your journey

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

  • What airport do you fly from for flights from Baltimore to Portsmouth?

    Baltimore/Washington (BWI), located 8.5 mi from the city center, is the airport you fly out of when you book flights from Baltimore to Portsmouth. 11 airlines have flights from Baltimore/Washington to Portsmouth on a regular basis. Booking flights from Baltimore/Washington to Portsmouth should not be difficult; the airport handles an average of 0 outbound flights to Portsmouth per day.

  • How long is the flight from Baltimore to Portsmouth?

    For as low as $798, Delta can have you in Portsmouth from Baltimore in 16h 45m. There are 3597 mi between Baltimore and Portsmouth. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most reliable airlines from Baltimore to Portsmouth?

    Consider American Airlines (63%), Aer Lingus (63%) or Finnair (63%) when booking your flight. These represent the most reliable airlines when flying from Baltimore to Portsmouth.

  • What are the cheapest flights from Baltimore to Portsmouth?

    The cheapest flight price from Baltimore to Portsmouth is $384. On average you can expect to pay $1,242. The most popular route, (Baltimore/Washington - Southampton Eastleigh), can usually be booked for $748.

  • Can I find deals for flights from Baltimore to Portsmouth that include hotel bookings?

    Yes. In addition to deals on Baltimore to Portsmouth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to Portsmouth?

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

  • Can I find deals for business class flights from Baltimore to Portsmouth?

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

  • What is the cheapest month to book a flight from Baltimore to Portsmouth?

    Currently, March is the cheapest month in which you can book a flight from Baltimore to Portsmouth (average of $31). Flying from Baltimore to Portsmouth in June is currently the most expensive (average of $748). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Baltimore to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Baltimore to Portsmouth

Discover the top 10 airlines that operate flights from Baltimore to Portsmouth. 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 2,558,603 searches. Data last updated November 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$369Average$522FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$472Average$618FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$506Average$913FlexibilityNo cancel feeOn-time69%
KLMCheapest$520Average$654FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$520Average$792FlexibilityNo cancel feeOn-time72%
Aer LingusCheapest$554Average$952FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$583Average$773FlexibilityNo cancel feeOn-time77%
FinnairCheapest$599Average$758FlexibilityNo cancel feeOn-time76%
DeltaCheapest$609Average$877FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$628Average$820FlexibilityNo cancel feeOn-time70%

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