$83+ Cheap flights from Buffalo to Denver (BUF - DEN)
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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — DEN
Aug 21 — Aug 281
Round-trip
1 adult, Economy
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Find cheap flights from Buffalo to Denver with Cheapflights
1. Tell us where you want to go
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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 Buffalo to Denver Intl are usually found in October or August, booked 56 days in advance, depart on a Friday or Wednesday and return on a Friday
Cheap flight deals from Buffalo to Denver
Cheapest
Best
Last-minute
One-way
Cheapest flights from Buffalo to DenverExplore the most affordable flight options available from Buffalo to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 22, 2026.
Explore the most affordable flight options available from Buffalo to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Wed 9/91:16 pm
BUF
- DEN
2 stops11h 44m
Frontier
Tue 9/2211:59 pm
DEN
- BUF
1 stop10h 22m
Frontier
Deal found 7/21![Frontier logo]()
$269
This Frontier deal was found by Cheapflights users on 7/22. 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 9/281:16 pm
BUF
- DEN
1 stop11h 17m
Frontier
Fri 10/211:59 pm
DEN
- BUF
1 stop10h 22m
Frontier
Deal found 7/22![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Fri 8/142:48 pm
BUF
- DEN
1 stop20h 15m
Frontier
Thu 8/2011:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/21![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Fri 8/72:48 pm
BUF
- DEN
1 stop9h 40m
Frontier
Sat 8/1511:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/20![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Sun 8/99:33 pm
BUF
- DEN
1 stop12h 34m
Frontier
Fri 8/2111:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/20![Frontier logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Sun 8/99:33 pm
BUF
- DEN
1 stop12h 34m
Frontier
Thu 8/2011:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/20![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Sat 8/812:28 pm
BUF
- DEN
1 stop12h 00m
Frontier
Fri 8/2111:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/20![Frontier logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Sat 8/812:28 pm
BUF
- DEN
1 stop12h 00m
Frontier
Wed 8/1911:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/20![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 7/17. 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.
Thu 9/241:16 pm
BUF
- DEN
2 stops13h 13m
Frontier
Mon 9/2811:59 pm
DEN
- BUF
1 stop10h 22m
Frontier
Deal found 7/17![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Sun 8/99:33 pm
BUF
- DEN
1 stop12h 34m
Frontier
Tue 8/1811:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/20![Frontier logo]()
$282
Best flights from Buffalo to DenverDiscover carefully curated flight deals from Buffalo to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 22, 2026.
Discover carefully curated flight deals from Buffalo to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 22, 2026.
This Trip.com deal was found by Cheapflights users on 7/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/810:02 pm
BUF
- DEN
1 stop12h 05m
Frontier
Sat 8/1510:36 am
DEN
- BUF
2 stops21h 53m
Frontier
Deal found 7/17![Frontier logo]()
$328
This United Airlines deal was found by Cheapflights users on 7/18. 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 9/58:55 am
BUF
- DEN
Nonstop3h 37m
United Airlines
Mon 9/75:25 pm
DEN
- BUF
Nonstop3h 12m
United Airlines
Deal found 7/18![United Airlines logo]()
$343
This Southwest deal was found by Cheapflights users on 7/19. 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 11/72:30 pm
BUF
- DEN
Nonstop3h 50m
Southwest
Sat 11/145:25 pm
DEN
- BUF
Nonstop3h 00m
Southwest
Deal found 7/19![Southwest logo]()
$377
This United Airlines deal was found by Cheapflights users on 7/21. 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 9/38:55 am
BUF
- DEN
Nonstop3h 37m
United Airlines
Tue 9/85:25 pm
DEN
- BUF
Nonstop3h 12m
United Airlines
Deal found 7/21![United Airlines logo]()
$355
This Southwest deal was found by Cheapflights users on 7/19. 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.
Fri 9/45:25 pm
BUF
- DEN
1 stop8h 20m
Southwest
Sun 9/66:20 pm
DEN
- BUF
Nonstop3h 15m
Southwest
Deal found 7/19![Southwest logo]()
$383
This Southwest deal was found by Cheapflights users on 7/20. 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 8/1711:25 am
BUF
- DEN
2 stops8h 20m
Southwest
Tue 8/1811:15 am
DEN
- BUF
2 stops7h 20m
Southwest
Deal found 7/20![Southwest logo]()
$396
This United Airlines deal was found by Cheapflights users on 7/22. 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 8/178:55 am
BUF
- DEN
Nonstop3h 37m
United Airlines
Tue 8/185:25 pm
DEN
- BUF
Nonstop3h 12m
United Airlines
Deal found 7/22![United Airlines logo]()
$427
This Southwest deal was found by Cheapflights users on 7/17. 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 9/13:55 pm
BUF
- DEN
Nonstop3h 25m
Southwest
Tue 9/81:40 pm
DEN
- BUF
Nonstop3h 05m
Southwest
Deal found 7/17![Southwest logo]()
$407
This Southwest deal was found by Cheapflights users on 7/18. 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 9/125:45 am
BUF
- DEN
2 stops9h 25m
Southwest
Sat 9/197:35 am
DEN
- BUF
2 stops8h 00m
Southwest
Deal found 7/18![Southwest logo]()
$407
This Southwest deal was found by Cheapflights users on 7/19. 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 8/135:40 am
BUF
- DEN
2 stops7h 45m
Southwest
Tue 8/1811:15 am
DEN
- BUF
2 stops7h 20m
Southwest
Deal found 7/19![Southwest logo]()
$407
This Southwest deal was found by Cheapflights users on 7/19. 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 11/102:35 pm
BUF
- DEN
Nonstop3h 50m
Southwest
Sun 11/1511:50 am
DEN
- BUF
Nonstop3h 00m
Southwest
Deal found 7/19![Southwest logo]()
$420
Last-minute flights from Buffalo to DenverDiscover last-minute flight deals from Buffalo to Denver. Data last updated July 22, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to Denver. Data last updated July 22, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 7/21. 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.
Thu 8/69:33 pm
BUF
- DEN
1 stop12h 34m
Multiple Airlines
Tue 8/1111:37 pm
DEN
- BUF
1 stop8h 00m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Fri 8/72:48 pm
BUF
- DEN
1 stop9h 40m
Frontier
Sat 8/1511:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/20![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Sat 8/812:28 pm
BUF
- DEN
1 stop12h 00m
Frontier
Fri 8/2111:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/20![Frontier logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Sat 8/812:28 pm
BUF
- DEN
1 stop12h 00m
Frontier
Wed 8/1911:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/20![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Sun 8/99:33 pm
BUF
- DEN
1 stop12h 34m
Frontier
Fri 8/2111:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/20![Frontier logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Sun 8/99:33 pm
BUF
- DEN
1 stop12h 34m
Frontier
Thu 8/2011:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/20![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Sun 8/99:33 pm
BUF
- DEN
1 stop12h 34m
Frontier
Tue 8/1811:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/20![Frontier logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Tue 8/1111:29 am
BUF
- DEN
1 stop23h 34m
Frontier
Fri 8/2111:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/22![Frontier logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Fri 8/142:48 pm
BUF
- DEN
1 stop20h 15m
Frontier
Thu 8/2011:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/21![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Sat 8/1510:02 pm
BUF
- DEN
2 stops31h 48m
Frontier
Wed 8/1911:59 pm
DEN
- BUF
1 stop8h 30m
Frontier
Deal found 7/22![Frontier logo]()
$281
One-way flights from Buffalo to DenverSearch for one-way flight options from Buffalo to Denver. Find affordable one-way fares based on user searches. Data last updated July 22, 2026.
Search for one-way flight options from Buffalo to Denver. Find affordable one-way fares based on user searches. Data last updated July 22, 2026.
This Trip.com deal was found by Cheapflights users on 7/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/111:16 pm
BUF
- DEN
1 stop11h 17m
Frontier
Deal found 7/19![Frontier logo]()
$83
This Trip.com deal was found by Cheapflights users on 7/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:16 pm
BUF
- DEN
1 stop11h 17m
Frontier
Deal found 7/19![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Wed 8/1911:36 am
BUF
- DEN
1 stop12h 34m
Frontier
Deal found 7/20![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 7/18. 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.
Thu 8/2011:36 am
BUF
- DEN
1 stop12h 29m
Frontier
Deal found 7/18![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 7/19. 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.
Wed 9/161:16 pm
BUF
- DEN
1 stop11h 17m
Frontier
Deal found 7/19![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 7/18. 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.
Fri 10/161:13 pm
BUF
- DEN
1 stop26h 47m
Frontier
Deal found 7/18![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 7/18. 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.
Sat 9/191:16 pm
BUF
- DEN
1 stop11h 17m
Frontier
Deal found 7/18![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 7/18. 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.
Sat 9/511:36 am
BUF
- DEN
1 stop23h 43m
Frontier
Deal found 7/18![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 7/19. 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.
Tue 8/1811:36 am
BUF
- DEN
1 stop23h 43m
Frontier
Deal found 7/19![Frontier logo]()
$97
This Trip.com deal was found by Cheapflights users on 7/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:36 am
BUF
- DEN
1 stop12h 29m
Frontier
Deal found 7/22![Frontier logo]()
$98
Find flight deals from Buffalo to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) 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 July 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $269 (Kiwi.com) |
One-way from | $83 (Trip.com) |
Popular in | July |
Cheapest in | October |
Average price | $499 |
Good round-trip deal | $457 or less |
Good one-way deal | $258 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Buffalo 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 2,558,603 searches. Data last updated July 22, 2026.
Use the filters below to find and compare flights from Buffalo to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BuffaloDenver
BUF - DEN
BUFDEN
Buffalo
Sat 8/8
10:02 pm-8:07 am
1 stop12h 05m
Denver Intl
Sat 8/15
10:36 am-10:29 am
2 stops21h 53m
$328
BuffaloDenver
BUF - DEN
BUFDEN
Buffalo
Sat 9/5
8:55 am-10:32 am
Nonstop3h 37m
Denver Intl
Mon 9/7
5:25 pm-10:37 pm
Nonstop3h 12m
$343
BuffaloDenver
BUF - DEN
BUFDEN
Buffalo
Thu 9/3
8:55 am-10:32 am
Nonstop3h 37m
Denver Intl
Tue 9/8
5:25 pm-10:37 pm
Nonstop3h 12m
$355
BuffaloDenver
BUF - DEN
BUFDEN
Buffalo
Sat 11/7
2:30 pm-4:20 pm
Nonstop3h 50m
Denver Intl
Sat 11/14
5:25 pm-10:25 pm
Nonstop3h 00m
$377
BuffaloDenver
BUF - DEN
BUFDEN
Buffalo
Fri 9/4
5:25 pm-11:45 pm
1 stop8h 20m
Denver Intl
Sun 9/6
6:20 pm-11:35 pm
Nonstop3h 15m
$383
BuffaloDenver
BUF - DEN
BUFDEN
Buffalo
Mon 8/17
11:25 am-5:45 pm
2 stops8h 20m
Denver Intl
Tue 8/18
11:15 am-8:35 pm
2 stops7h 20m
$396
Quickest round-trip
BuffaloDenver
BUF - DEN
BUFDEN
Buffalo
Tue 9/1
3:55 pm-5:20 pm
Nonstop3h 25m
Denver Intl
Tue 9/8
1:40 pm-6:45 pm
Nonstop3h 05m
$407
BuffaloDenver
BUF - DEN
BUFDEN
Buffalo
Sat 9/12
5:45 am-1:10 pm
2 stops9h 25m
Denver Intl
Sat 9/19
7:35 am-5:35 pm
2 stops8h 00m
$407
BuffaloDenver
BUF - DEN
BUFDEN
Buffalo
Thu 8/13
5:40 am-11:25 am
2 stops7h 45m
Denver Intl
Tue 8/18
11:15 am-8:35 pm
2 stops7h 20m
$407
BuffaloDenver
BUF - DEN
BUFDEN
Buffalo
Tue 11/10
2:35 pm-4:25 pm
Nonstop3h 50m
Denver Intl
Sun 11/15
11:50 am-4:50 pm
Nonstop3h 00m
$420
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Buffalo 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 Buffalo to Denver in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Buffalo-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Buffalo-Denver flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Buffalo-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 Buffalo-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 Buffalo to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Buffalo with our price prediction graph.
BUF-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 Buffalo to Denver
Prices
Airlines
How far ahead should I book a flight from Buffalo to Denver?
Booking 55 days in advance of your planned departure date is, on average, the best time to get cheap flights from Buffalo to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Buffalo to Denver?
Currently, October is the cheapest month in which you can book a flight from Buffalo to Denver (average of $264). Flying from Buffalo to Denver in July is currently the most expensive (average of $499). 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 BUF to DEN?
Find hourly flight availability from Buffalo 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 July 22, 2026.
One of the essential ways to save on airfare from Buffalo to Denver is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 52% on airfare.
What is the cheapest day to fly from Buffalo to Denver?
Use this chart to determine the cheapest time to fly round-trip from Buffalo to Denver. Price data was last updated on July 18, 2026.
Travelers seeking maximum savings on their Buffalo to Denver flight should consider departing on Wednesday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 July 22, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Buffalo to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Buffalo 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
Black Hawk
Westminster
Centennial
Lakewood
Broomfield
Golden
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Glendale
Evergreen
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Alternative routes for Buffalo to Denver
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Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.
Other flights to Denver
Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 22, 2026.
Search flights from Buffalo to Denver by cabin class
Find flights from Buffalo to Denver, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Buffalo and Denver flights
Browse other Buffalo and Denver flight options. Last updated on July 22, 2026.
Other flights from Buffalo
Browse through other flights departing from Buffalo. Flights are based on user searches made on Cheapflights and were last updated on July 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Buffalo to Denver
Discover the top 6 airlines that operate flights from Buffalo 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 2,558,603 searches. Data last updated July 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$303 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$100 | Average$222 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$176 | Average$375 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$217 | Average$439 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$218 | Average$305 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$269 | Average$472 | FlexibilityNo cancel fee | On-time63% |