Boise (BOI) – Denver (DEN)
- Distance
- 1,044 km
- 649 mi · 564 nm
- Flight time
- 1 h 55 min / 1 h 59 min
- Average gate to gate: BOI → DEN / back
- Time difference
- none
- CO2 per passenger
- 131 kg
- One way, economy, incl. RF (77 kg CO2 only)
- Passengers / year
- 710,450
- Aug 2025 – Jul 2026 · +0.2%
- Flights / week
- 118
- Both directions, average
- Seats filled
- 84%
- 843,820 seats a year
- Airlines nonstop
- 4
- WN, UA, OO
Traffic: U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service), Aug 2025 – Jul 2026. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources
The way there
- Heading from BOI
- 109°
- Heading from DEN
- 297°
- Halfway point
- 41.86, -110.28
- Great-circle km
- 1,042 km (sphere, for EU261)
- In the air BOI → DEN
- 1 h 28 min
- In the air DEN → BOI
- 1 h 35 min
- Clocks
- Same time in both
The estimate for a route without real times is 2 h; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Aug 2025 | 65,103 |
| Sep 2025 | 60,764 |
| Oct 2025 | 61,717 |
| Nov 2025 | 54,619 |
| Dec 2025 | 57,602 |
| Jan 2026 | 51,094 |
| Feb 2026 | 49,589 |
| Mar 2026 | 58,389 |
| Apr 2026 | 53,498 |
| May 2026 | 64,490 |
| Jun 2026 | 67,464 |
| Jul 2026 | 66,121 |
Show as a table
| Month | Flights |
|---|---|
| Aug 2025 | 522 |
| Sep 2025 | 505 |
| Oct 2025 | 522 |
| Nov 2025 | 490 |
| Dec 2025 | 523 |
| Jan 2026 | 522 |
| Feb 2026 | 472 |
| Mar 2026 | 512 |
| Apr 2026 | 498 |
| May 2026 | 523 |
| Jun 2026 | 509 |
| Jul 2026 | 518 |
Airlines flying BOI–DEN nonstop
| Airline | Flights / week | Share of passengers |
|---|---|---|
| WNSouthwest Airlines | 42 | 41% |
| UAUnited Air Lines | 35 | 38% |
| OOSkyWest Airlines | 36 | 16% |
| F9Frontier Airlines | 5.0 | 5% |
Both directions, Aug 2025 – Jul 2026. Airlines with at least one flight a month. U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service). Sources
Aircraft on this route
- Embraer ERJ-175 · 1,272 flights
- Boeing 737-800 · 971 flights
- Boeing 737-900ER · 919 flights
- Boeing 737-700/700LR/Max 7 · 863 flights
- Boeing B737 Max 800 · 827 flights
- Canadair RJ-700 · 583 flights
- Airbus Industrie A319 · 196 flights
- Airbus Industrie A320-100/200 · 153 flights
Also carried: 132 tonnes of freight and 0 tonnes of mail a year (passenger and cargo flights).
Punctuality
- On time
- 79.2%
- Arrived within 15 min of schedule
- Average delay
- 14 min
- Late arrivals count, early ones as 0
- Cancelled
- 0.1%
- Flights counted
- 6,070
- Aug 2025 – Jul 2026
| Airline | On time | Average delay |
|---|---|---|
| WNSouthwest Airlines | 75.4% | 13 min |
| UAUnited Air Lines | 79.9% | 16 min |
| OOSkyWest Airlines | 83% | 14 min |
| F9Frontier Airlines | 80.4% | 16 min |
Delay minutes by cause: airline 34% · aircraft arriving late 39% · air traffic system 24% · weather 3% · security 0%.
Both directions, Aug 2025 – Jul 2026. BTS Reporting Carrier On-Time Performance (US domestic flights of the larger US airlines). Sources
What passengers paid
- Average fare, Q1 2026
- $224
- One way, all cabins
- Average over a year
- $212
- Q3 2025 – Q1 2026
- Largest airline
- United Air Lines
- 55% of passengers · $249
- Lowest-fare airline
- Southwest Airlines
- 32% of passengers · $209
History, not a price to book: what the average passenger paid per one-way trip in each quarter (Q3 2025 $197 · Q4 2025 $219 · Q1 2026 $224).
U.S. DOT Consumer Airfare Report, Table 1a (airline ticket sample, US domestic airport pairs). Sources
Delay compensation (EU261 / UK261)
Measured by great-circle distance: 1,042 km.
Neither EU261 nor UK261 covers this route: it neither starts nor ends in the EU, EEA, Switzerland or the UK. Other countries have their own rules (for example Canada's APPR or Brazil's ANAC rules).
Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.
Every airport pair between Boise and Denver
Kilometres. Linked numbers have a page of their own. All Denver airports