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$661+ Cheap flights from Boise (BOI) to Heidelberg, Germany

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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — FRA
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Boise to Heidelberg

Keep the following information in mind while searching for Boise to Heidelberg flight deals. Data was last updated September 16, 2025.

Round-trip from

$661
(United Airlines)

Popular in

September

Cheapest in

August

Average price

$1,583
From Boise Air Term. Gowen Fld to Heidelberg
Search Deals
High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 5% potential price decrease ($58 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 Boise to Heidelberg

Cheapest flights from Boise to Heidelberg
Explore the most affordable flight options available from Boise to Heidelberg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:17 amBOI - FRA
1 stop18h 38mUnited Airlines
Wed 11/510:05 amFRA - BOI
2 stops44h 40mUnited Airlines
Deal found 9/14$661
This Virgin Atlantic deal was found by Cheapflights users on 9/14. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/295:42 amBOI - FRA
2 stops19h 08mVirgin Atlantic
Wed 11/510:40 amFRA - BOI
2 stops21h 14mVirgin Atlantic
Deal found 9/14$682
This United deal was found by Cheapflights users on 9/14. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/132:49 pmBOI - FRA
2 stops32h 36mMultiple Airlines
Fri 1/1610:40 amFRA - BOI
2 stops32h 44mMultiple Airlines
Deal found 9/14$717
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/122:40 pmBOI - FRA
1 stop16h 15mUnited Airlines
Sun 11/1610:10 amFRA - BOI
1 stop21h 18mUnited Airlines
Deal found 9/14$727
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:40 amBOI - FRA
1 stop21h 15mUnited Airlines
Fri 11/281:20 pmFRA - BOI
1 stop18h 08mUnited Airlines
Deal found 9/15$772
This Finnair deal was found by Cheapflights users on 9/15. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/307:00 amBOI - FRA
2 stops18h 50mMultiple Airlines
Fri 11/2810:50 amFRA - BOI
2 stops19h 17mMultiple Airlines
Deal found 9/15$784
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:35 amBOI - FRA
2 stops20h 10mAir Canada
Thu 1/2210:05 amFRA - BOI
2 stops19h 47mAir Canada
Deal found 9/15$791
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/98:20 amBOI - FRA
1 stop17h 35mUnited Airlines
Mon 10/135:00 pmFRA - BOI
2 stops36h 24mUnited Airlines
Deal found 9/15$795

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to Heidelberg 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 16, 2025.
Use the filters below to find and compare flights from Boise to Heidelberg that are best for you.

Fly from

Boise

Fly to

Heidelberg

Route

Depart

Return

Price

BoiseFrankfurt am Main

BOI - FRA

BOIFRA

Boise Air Term. Gowen Fld

Wed 10/29

8:17 am-9:55 am

1 stop18h 38m

Frankfurt am Main

Wed 11/5

10:05 am-10:45 pm

2 stops44h 40m

$661

BoiseFrankfurt am Main

BOI - FRA

BOIFRA

Boise Air Term. Gowen Fld

Wed 10/29

5:42 am-7:50 am

2 stops19h 08m

Frankfurt am Main

Wed 11/5

10:40 am-11:54 pm

2 stops21h 14m

$682

BoiseFrankfurt am Main

BOI - FRA

BOIFRA

Boise Air Term. Gowen Fld

Wed 11/12

2:40 pm-2:55 pm

1 stop16h 15m

Frankfurt am Main

Sun 11/16

10:10 am-11:28 pm

1 stop21h 18m

$727

BoiseFrankfurt am Main

BOI - FRA

BOIFRA

Boise Air Term. Gowen Fld

Thu 10/30

10:40 am-2:55 pm

1 stop21h 15m

Frankfurt am Main

Fri 11/28

1:20 pm-11:28 pm

1 stop18h 08m

$772

BoiseFrankfurt am Main

BOI - FRA

BOIFRA

Boise Air Term. Gowen Fld

Thu 10/30

7:00 am-8:50 am

2 stops18h 50m

Frankfurt am Main

Fri 11/28

10:50 am-10:07 pm

2 stops19h 17m

$784

BoiseFrankfurt am Main

BOI - FRA

BOIFRA

Boise Air Term. Gowen Fld

Tue 12/16

6:35 am-10:45 am

2 stops20h 10m

Frankfurt am Main

Thu 1/22

10:05 am-9:52 pm

2 stops19h 47m

$791

BoiseFrankfurt am Main

BOI - FRA

BOIFRA

Boise Air Term. Gowen Fld

Fri 10/3

9:45 am-9:10 am

1 stop15h 25m

Frankfurt am Main

Fri 10/17

5:05 pm-6:47 pm

2 stops33h 42m

$811

BoiseFrankfurt am Main

BOI - FRA

BOIFRA

Boise Air Term. Gowen Fld

Fri 10/3

7:00 am-8:45 am

1 stop17h 45m

Frankfurt am Main

Fri 10/17

10:55 am-10:24 pm

1 stop19h 29m

$827

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from Boise to Heidelberg

Have a flexible travel schedule? Discover the best time to fly to Heidelberg from Boise 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 Boise to Heidelberg

What is the cheapest time of day to fly from BOI to HE1?

Find hourly flight availability from Boise to Heidelberg. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

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

Reviews of airlines servicing Heidelberg

Get insights into the airlines that provide service to Heidelberg. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heidelberg. Reviews last updated September 16, 2025.
Read reviews from past customers who have flown United Airlines from Boise to Heidelberg. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,924 reviews
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Boise to Heidelberg. 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 Boise to Heidelberg?

    Boise Air Term. Gowen Fld (BOI) is the airport you will fly out of if you book a flight from Boise to Heidelberg. You should not have trouble finding flights to Heidelberg from Air Term. Gowen Fld; the airport handles an average of 0 outbound flights to Heidelberg per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Boise airport to Heidelberg. It is only a 3.3 mi journey to Air Term. Gowen Fld (BOI) from Boise’s city center.

  • How long is the flight from Boise to Heidelberg?

    There are many flights that can get you from Boise to Heidelberg in 18h 38m. Fly via United Airlines or Virgin Atlantic to get the fastest option. Airlines will cover a distance of 5162 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Boise to Heidelberg (average of $729). Flying from Boise to Heidelberg in June is currently the most expensive (average of $1,091). 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 Boise to Heidelberg

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Top airline flying from Boise to Heidelberg

Discover the top airline that operate flights from Boise to Heidelberg. 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 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$690Average$940FlexibilityNo cancel feeOn-time69%

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