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$275+ Cheap flights from Detroit (DTT) to Portsmouth, England

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — LHR
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Detroit to Portsmouth

Keep the following information in mind while searching for Detroit to Portsmouth flight deals. Data was last updated September 11, 2025.

Round-trip from

$927
(Delta)

One-way from

$275
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$999
From Detroit (DTT) to Portsmouth
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One-way flight from Detroit (DTT) to Portsmouth
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Highest demand for flights based on searches. 9% potential increase in price ($90 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Detroit to Portsmouth

Cheapest flights from Detroit to Portsmouth
Explore the most affordable flight options available from Detroit to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Delta deal was found by Cheapflights users on 9/10. 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.
Sat 10/119:50 pmDTW - SOU
2 stops38h 10mDelta
Sun 10/196:25 pmSOU - DTW
1 stop22h 23mDelta
Deal found 9/10$927
This Delta deal was found by Cheapflights users on 9/10. 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 10/910:35 pmDTW - SOU
1 stop29h 10mDelta
Sat 10/186:05 pmSOU - DTW
1 stop22h 43mDelta
Deal found 9/10$961
This Delta deal was found by Cheapflights users on 9/10. 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 10/107:45 pmDTW - SOU
2 stops16h 45mDelta
Sun 10/196:25 pmSOU - DTW
1 stop22h 23mDelta
Deal found 9/10$990
This Delta deal was found by Cheapflights users on 9/10. 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 10/102:04 pmDTW - SOU
2 stops13h 41mDelta
Fri 10/179:20 amSOU - DTW
2 stops14h 59mDelta
Deal found 9/10$1,165
This Delta deal was found by Cheapflights users on 9/10. 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 10/910:35 pmDTW - SOU
1 stop13h 25mDelta
Fri 10/179:20 amSOU - DTW
2 stops14h 59mDelta
Deal found 9/10$1,216
This Delta deal was found by Cheapflights users on 9/10. 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.
Sat 10/1112:20 pmDTW - SOU
2 stops15h 25mDelta
Sat 10/189:20 amSOU - DTW
2 stops16h 11mDelta
Deal found 9/10$1,283
This Delta deal was found by Cheapflights users on 9/10. 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 10/912:20 pmDTW - SOU
2 stops15h 25mDelta
Sun 10/199:20 amSOU - DTW
2 stops14h 59mDelta
Deal found 9/10$1,363

Cheapflights Fare Finder

 
Customize your flight search to find flights from Detroit 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 September 11, 2025.
Use the filters below to find and compare flights from Detroit to Portsmouth that are best for you.

Fly from

Detroit

Fly to

Portsmouth

Route

Depart

Return

Price

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Sat 10/11

9:50 pm-5:00 pm

2 stops38h 10m

Southampton Eastleigh

Sun 10/19

6:25 pm-11:48 am

1 stop22h 23m

$927

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Sat 10/11

9:50 pm-5:00 pm

2 stops38h 10m

Southampton Eastleigh

Sat 10/18

6:05 pm-11:48 am

1 stop22h 43m

$927

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Thu 10/9

10:35 pm-8:45 am

1 stop29h 10m

Southampton Eastleigh

Sun 10/19

6:25 pm-1:45 pm

1 stop24h 20m

$961

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Thu 10/9

7:30 am-8:45 am

2 stops20h 15m

Southampton Eastleigh

Sat 10/18

6:05 pm-1:45 pm

1 stop24h 40m

$965

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Fri 10/10

7:45 pm-5:30 pm

2 stops16h 45m

Southampton Eastleigh

Sun 10/19

6:25 pm-11:48 am

1 stop22h 23m

$990

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Fri 10/10

2:04 pm-8:45 am

2 stops13h 41m

Southampton Eastleigh

Sat 10/18

6:05 pm-1:45 pm

1 stop24h 40m

$990

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Fri 10/10

2:04 pm-8:45 am

2 stops13h 41m

Southampton Eastleigh

Fri 10/17

9:20 am-7:19 pm

2 stops14h 59m

$1,165

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Thu 10/9

10:35 pm-5:00 pm

1 stop13h 25m

Southampton Eastleigh

Fri 10/17

9:20 am-7:19 pm

2 stops14h 59m

$1,216

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Fri 10/17

7:28 am-11:25 am

3 stops46h 57m

$275

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Fri 10/17

4:30 pm-5:30 pm

1 stop20h 00m

$598

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from Detroit to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Detroit 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 Detroit to Portsmouth

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

Currently, November is the cheapest month in which you can book a flight from Detroit to Portsmouth (average of $661). Flying from Detroit to Portsmouth in June is currently the most expensive (average of $1,098). 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 DTT to P0R?

Find hourly flight availability from Detroit 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 September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Detroit to Portsmouth as you normally would.

What is the cheapest day to fly from Detroit to Portsmouth?

Use this chart to determine the cheapest time to fly round-trip from Detroit to Portsmouth. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Detroit to Portsmouth flight should consider departing on Sunday afternoons when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Detroit to Portsmouth

Explore weekly flight availability from Detroit to Portsmouth. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2025.

The most flights from DTT to P0R are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

Related info for your journey

Find useful and relevant information for your journey from Detroit 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 Detroit to Portsmouth?

    Located just 0.6 mi from the city center, Detroit All airports is the airport most travelers will use when flying to Portsmouth from Detroit. Booking flights from All airports (DTT) to Portsmouth should be relatively easy as there are 0 daily outbound flights to Portsmouth from 13 different airlines.

  • How long is the flight from Detroit to Portsmouth?

    Departing from Detroit to Portsmouth will take you 38h 10m. There are 3733 mi between Detroit and Portsmouth.

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

    The top 3 most reliable airlines when flying from Detroit to Portsmouth are KLM (78%), Air France (78%) and Scandinavian Airlines (78%).

  • What are the cheapest flights from Detroit to Portsmouth?

    While on average a flight from Detroit to Portsmouth is generally $2,248, our data shows the cheapest flight currently is $347. When looking at the most popular route, (Detroit Metropolitan Wayne County - Southampton Eastleigh), you can expect to pay $964 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Detroit 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 Detroit to Portsmouth?

    Currently, November is the cheapest month in which you can book a flight from Detroit to Portsmouth (average of $661). Flying from Detroit to Portsmouth in June is currently the most expensive (average of $1,098). 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 Detroit to Portsmouth

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Top 10 airlines flying from Detroit to Portsmouth

Discover the top 10 airlines that operate flights from Detroit 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$60Average$130FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$66Average$768FlexibilityNo cancel feeOn-time62%
British AirwaysCheapest$504Average$812FlexibilityNo cancel feeOn-time70%
IberiaCheapest$510Average$807FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$511Average$705FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$576Average$811FlexibilityNo cancel feeOn-time71%
Turkish AirlinesCheapest$639Average$683FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$662Average$821FlexibilityNo cancel feeOn-time77%
KLMCheapest$713Average$1,139FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$726Average$1,050FlexibilityNo cancel feeOn-time77%

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