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Cheap flights from Portsmouth to Boise

LHR — BOI
26 Feb — 5 Mar1
1 adult

Cheap flight deals from Portsmouth to Boise

Keep the following information in mind while searching for Portsmouth to Boise flight deals. Data was last updated 21 February 2025.

Popular in

August

Cheapest in

November

Average price

£636
Highest demand for flights based on searches. 16% potential increase in price (£117 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).
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Average for round-trip flights in February 2025
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Best time to book a flight from Portsmouth to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from Portsmouth with our price prediction graph.
Estimated return 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.

Travel insights for flights from Portsmouth to Boise

Get recent, data-driven insights about flights from Portsmouth to Boise including ideal travel times, pricing trends, and more.

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

Currently, October is the cheapest month in which you can book a flight from Portsmouth to Boise (average of £754). Flying from Portsmouth to Boise in August is currently the most expensive (average of £1,152). 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 P0R to BOI?

Find hourly flight availability from Portsmouth to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

When flying from Portsmouth to Boise, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Boise by month

Plan your trip to Boise by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Boise ranges from 5.0 - 41.0 inches per month. December is typically the wettest month, when rainfall can reach 41.0 mm. August is typically the driest time to visit Boise when rainfall is around 5.0 mm.

Temperature in Boise by month

Plan your trip to Boise by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Boise, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 24.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around -1.0 C).

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Boise. 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 into for flights to Boise from Portsmouth?

    Boise Air Term. Gowen Fld (BOI) is the airport you will fly into if you book a flight from Portsmouth to Boise. You should not have trouble finding flights to Air Term. Gowen Fld from Portsmouth; the airport handles an average of 0 inbound flights from Portsmouth per day. You should also have plenty of airline options to choose from since 7 airlines have flights to the Boise airport from Portsmouth. It is only a 3.3 mi journey from Air Term. Gowen Fld (BOI) to Boise’s city center.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Portsmouth to Boise (average of £754). Flying from Portsmouth to Boise in August is currently the most expensive (average of £1,152). 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.

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Browse thousands of different options on Cheapflights for your next trip

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Top 7 airlines flying from Portsmouth to Boise

Discover the top 7 airlines that operate flights from Portsmouth to Boise. 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 858,174 searches. Data last updated 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£521Average£691FlexibilityNo cancel feeOn-time76%
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United AirlinesCheapest£563Average£667FlexibilityNo cancel feeOn-time69%
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KLMCheapest£564Average£975FlexibilityNo cancel feeOn-time75%
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LufthansaCheapest£569Average£637FlexibilityNo cancel feeOn-time76%
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Virgin AtlanticCheapest£614Average£785FlexibilityNo cancel feeOn-time72%
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IcelandairCheapest£662Average£860FlexibilityNo cancel feeOn-time76%
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British AirwaysCheapest£712Average£911FlexibilityNo cancel feeOn-time70%
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portsmouth to Boise?

Cheapflights makes it easy to find Portsmouth to Boise flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Boise?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Portsmouth to Boise for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Portsmouth to Boise with no change fees?

Yes, we can. To see specific flights from Portsmouth to Boise with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Portsmouth to Boise become cheaper?

Of course! You can now track prices for flights from Portsmouth to Boise and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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