$89+ Cheap flights from Boise to Denver (BOI - DEN)
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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Boise to Denver with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Denver Intl are usually found in February or January, booked 26 days in advance, depart on a Thursday or Friday and return on a Thursday
Cheap flight deals from Boise to Denver
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boise to DenverExplore the most affordable flight options available from Boise to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Boise to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/73:20 pm -
Nonstop1h 50m
Wed 10/148:20 pm -
Nonstop2h 00m
Deal found 9/9![Southwest logo]()
$197
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/292:25 pm -
Nonstop1h 55m
Tue 10/65:55 am -
1 stop6h 20m
Deal found 9/8![Southwest logo]()
$207
This Delta deal was found by Cheapflights users on 9/8. 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 9/296:44 pm -
1 stop3h 56m
Tue 10/65:25 am -
1 stop5h 17m
Deal found 9/8![Delta logo]()
$217
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm -
1 stop27h 43m
Sun 10/410:49 pm -
1 stop15h 06m
Deal found 9/8![Frontier logo]()
$220
This Southwest deal was found by Cheapflights users on 9/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/284:55 pm -
1 stop6h 45m
Mon 10/55:55 am -
2 stops7h 25m
Deal found 9/7![Southwest logo]()
$222
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/292:49 pm -
1 stop21h 53m
Wed 11/116:42 pm -
1 stop19h 12m
Deal found 9/9![Frontier logo]()
$224
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:05 am -
2 stops7h 40m
Wed 10/76:05 am -
2 stops6h 45m
Deal found 9/8![Southwest logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:43 pm -
1 stop6h 05m
Fri 12/45:00 pm -
1 stop23h 11m
Deal found 9/9![Alaska Airlines logo]()
$230
This CheapOair deal was found by Cheapflights users on 9/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:50 pm -
1 stop8h 54m
Wed 9/306:38 pm -
1 stop19h 17m
Deal found 9/6![Frontier logo]()
$232
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:50 pm -
2 stops13h 25m
Wed 10/146:05 am -
2 stops6h 45m
Deal found 9/8![Southwest logo]()
$233
This Expedia deal was found by Cheapflights users on 9/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:50 pm -
1 stop19h 17m
Mon 9/287:30 am -
1 stop6h 25m
Deal found 9/5![Frontier logo]()
$241
Best flights from Boise to DenverDiscover carefully curated flight deals from Boise to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Boise to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/72:45 pm -
Nonstop1h 50m
Sat 11/148:45 am -
Nonstop2h 05m
Deal found 9/8![Southwest logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/164:20 pm -
1 stop5h 16m
Thu 10/2212:31 pm -
2 stops11h 28m
Deal found 9/5![Alaska Airlines logo]()
$336
This United Airlines deal was found by Cheapflights users on 9/4. 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.
Sat 10/35:00 am -
Nonstop2h 10m
Fri 10/97:40 am -
Nonstop1h 54m
Deal found 9/4![United Airlines logo]()
$344
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:45 pm -
Nonstop1h 50m
Mon 11/212:15 pm -
2 stops8h 55m
Deal found 9/8![Southwest logo]()
$212
This Alaska Airlines deal was found by Cheapflights users on 9/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/134:16 pm -
2 stops20h 41m
Sun 11/157:03 am -
1 stop8h 21m
Deal found 9/4![Alaska Airlines logo]()
$353
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/141:25 pm -
1 stop8h 00m
Sun 10/188:35 am -
Nonstop2h 05m
Deal found 9/9![Southwest logo]()
$330
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Mon 11/305:44 pm -
Nonstop1h 58m
Wed 12/911:35 am -
Nonstop1h 58m
Deal found 9/7![United Airlines logo]()
$382
This Southwest deal was found by Cheapflights users on 9/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:20 am -
2 stops6h 30m
Mon 11/25:00 am -
2 stops6h 50m
Deal found 9/6![Southwest logo]()
$357
This Southwest deal was found by Cheapflights users on 9/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:15 am -
1 stop5h 10m
Sun 11/86:10 pm -
1 stop6h 40m
Deal found 9/6![Southwest logo]()
$367
This Southwest deal was found by Cheapflights users on 9/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:50 pm -
1 stop5h 30m
Wed 12/98:25 pm -
Nonstop2h 05m
Deal found 9/7![Southwest logo]()
$394
Last-minute flights from Boise to DenverDiscover last-minute flight deals from Boise to Denver. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Denver. Data last updated September 10, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 9/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:50 pm -
1 stop19h 17m
Mon 9/287:30 am -
1 stop6h 25m
Deal found 9/5![Frontier logo]()
$241
This Southwest deal was found by Cheapflights users on 9/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/284:55 pm -
1 stop6h 45m
Mon 10/55:55 am -
2 stops7h 25m
Deal found 9/7![Southwest logo]()
$222
This CheapOair deal was found by Cheapflights users on 9/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:50 pm -
1 stop8h 54m
Wed 9/306:38 pm -
1 stop19h 17m
Deal found 9/6![Frontier logo]()
$232
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:35 pm -
Nonstop1h 50m
Wed 10/78:45 am -
Nonstop2h 00m
Deal found 9/8![Southwest logo]()
$197
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/292:25 pm -
Nonstop1h 55m
Tue 10/65:55 am -
1 stop6h 20m
Deal found 9/8![Southwest logo]()
$207
This Delta deal was found by Cheapflights users on 9/8. 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 9/296:44 pm -
1 stop3h 56m
Tue 10/65:25 am -
1 stop5h 17m
Deal found 9/8![Delta logo]()
$217
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm -
1 stop27h 43m
Sun 10/410:49 pm -
1 stop15h 06m
Deal found 9/8![Frontier logo]()
$220
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:50 pm -
2 stops13h 25m
Wed 10/146:05 am -
2 stops6h 45m
Deal found 9/8![Southwest logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/122:50 pm -
1 stop8h 53m
Thu 10/159:00 am -
2 stops28h 55m
Deal found 9/4![Frontier logo]()
$234
This Frontier deal was found by Cheapflights users on 9/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/162:50 pm -
1 stop5h 00m
Thu 10/227:31 am -
1 stop6h 24m
Deal found 9/5![Frontier logo]()
$250
One-way flights from Boise to DenverSearch for one-way flight options from Boise to Denver. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from Boise to Denver. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Frontier deal was found by Cheapflights users on 9/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/76:56 pm -
1 stop5h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$89
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:49 pm -
1 stop21h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$95
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:55 pm -
Nonstop1h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Southwest logo]()
$99
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:59 pm -
1 stop14h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Alaska Airlines logo]()
$104
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/711:45 am -
1 stop8h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Southwest logo]()
$109
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:00 am -
2 stops10h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Southwest logo]()
$114
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:50 pm -
1 stop8h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$115
This Expedia deal was found by Cheapflights users on 9/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/272:50 pm -
1 stop19h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$117
This Priceline deal was found by Cheapflights users on 9/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:56 pm -
1 stop5h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$125
Find flight deals from Boise to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (Southwest) |
One-way from | $89 (Frontier) |
Popular in | April |
Cheapest in | February |
Average price | $330 |
Good round-trip deal | $355 or less |
Good one-way deal | $196 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise to Denver 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 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from Boise to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseDenver
BOI Boise Air Term. Gowen Fld - DEN Denver Intl
BOIDEN
Boise Air Term. Gowen Fld
Thu 10/8
6:00 am-9:44 am
1 stop3h 44m
Denver Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$109
BoiseDenver
BOI Boise Air Term. Gowen Fld - DEN Denver Intl
BOIDEN
Boise Air Term. Gowen Fld
Wed 10/7
11:20 am-3:55 pm
1 stop4h 35m
Denver Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$109
BoiseDenver
BOI Boise Air Term. Gowen Fld - DEN Denver Intl
BOIDEN
Boise Air Term. Gowen Fld
Tue 10/6
1:06 pm-7:34 pm
1 stop6h 28m
Denver Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$109
BoiseDenver
BOI Boise Air Term. Gowen Fld - DEN Denver Intl
BOIDEN
Boise Air Term. Gowen Fld
Wed 11/11
1:40 pm-9:00 pm
2 stops7h 20m
Denver Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$114
BoiseDenver
BOI Boise Air Term. Gowen Fld - DEN Denver Intl
BOIDEN
Boise Air Term. Gowen Fld
Tue 10/6
2:44 pm-4:45 pm
Nonstop2h 01m
Denver Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$139
Quickest round-trip
BoiseDenver
BOI Boise Air Term. Gowen Fld - DEN Denver Intl
BOIDEN
Boise Air Term. Gowen Fld
Sat 10/10
10:35 am-12:34 pm
Nonstop1h 59m
Denver Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$139
BoiseDenver
BOI Boise Air Term. Gowen Fld - DEN Denver Intl
BOIDEN
Boise Air Term. Gowen Fld
Fri 11/6
4:16 pm-10:38 pm
1 stop6h 22m
Denver Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$155
BoiseDenver
BOI Boise Air Term. Gowen Fld - DEN Denver Intl
BOIDEN
Boise Air Term. Gowen Fld
Wed 10/7
1:32 pm-6:25 pm
1 stop4h 53m
Denver Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$155
BoiseDenver
BOI Boise Air Term. Gowen Fld - DEN Denver Intl
BOIDEN
Boise Air Term. Gowen Fld
Tue 11/3
6:37 am-1:58 pm
1 stop7h 21m
Denver Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$155
BoiseDenver
BOI Boise Air Term. Gowen Fld - DEN Denver Intl
BOIDEN
Boise Air Term. Gowen Fld
Sat 12/5
5:43 pm-11:48 pm
1 stop6h 05m
Denver Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$155
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Boise to Denver
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Denver in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boise-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Denver flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boise to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Boise with our price prediction graph.
BOI-DEN
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 Denver
Prices
Airlines
How far ahead should I book a flight from Boise to Denver?
The price you pay for your flight from Boise to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 25 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Boise to Denver?
Currently, February is the cheapest month in which you can book a flight from Boise to Denver (average of $217). Flying from Boise to Denver in April is currently the most expensive (average of $347). 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 BOI to DEN?
Find hourly flight availability from Boise to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 10, 2026.
A simple way to save on the total cost of your ticket is to fly from Boise to Denver in the evening. If you’re flexible enough to do this you can expect to save up to 50% on your trip compared to booking a flight in the morning.
Reviews of airlines servicing Denver
Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated September 10, 2026.
Read reviews from past customers who have flown Southwest,Alaska Airlines, andDelta from Boise to Denver. 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.
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Boise to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsThornton
Westminster
Lakewood
Centennial
Black Hawk
Broomfield
Golden
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Greeley
Cripple Creek
Winter Park
Limon
Frisco
Manitou Springs
Englewood
Glendale
Evergreen
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Top 5 airlines flying from Boise to Denver
Discover the top 5 airlines that operate flights from Boise to Denver. 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 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$52 | Average$154 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$145 | Average$292 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$194 | Average$323 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$211 | Average$341 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$256 | Average$352 | FlexibilityNo cancel fee | On-time75% |