Travel with Axel,
get the best price.

Chicago → Denver

Dec 2, 2026 · return Dec 4, 2026

ORD → DEN1 adulteconomyRound trip

11 flight options · 3 airlines

Nonstop flights

Wed, Dec 2 – Fri, Dec 4

Frontier Airlines
6:30 amORD
2h 56m
Nonstop
8:26 amDEN
Frontier Airlines
9:26 pmDEN
2h 27m
Nonstop
12:53 am+1ORD

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

American Airlines
9:05 pmORD
2h 49m
Nonstop
10:54 pmDEN
American Airlines
6:18 pmDEN
2h 37m
Nonstop
9:55 pmORD

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

United Airlines
9:00 pmORD
2h 44m
Nonstop
10:44 pmDEN
United Airlines
8:25 pmDEN
2h 33m
Nonstop
11:58 pmORD

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

American Airlines
11:54 amORD
2h 53m
Nonstop
1:47 pmDEN
American Airlines
6:18 pmDEN
2h 37m
Nonstop
9:55 pmORD

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

United Airlines
8:40 amORD
2h 46m
Nonstop
10:26 amDEN
United Airlines
8:25 pmDEN
2h 33m
Nonstop
11:58 pmORD

Round-trip total · 1 adult · Taxes included

One-stop flights

Wed, Dec 2 – Fri, Dec 4

United Airlines
5:59 amORD
5h 36m
MSN · 1h 51m
10:35 amDEN
United Airlines
8:25 pmDEN
2h 33m
Nonstop
11:58 pmORD

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

United Airlines
12:55 pmORD
4h 46m
CID · 1h 11m
4:41 pmDEN
United Airlines
8:25 pmDEN
2h 33m
Nonstop
11:58 pmORD

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

United Airlines
12:23 pmORD
6h 17m
ICT · 2h 9m
5:40 pmDEN
United Airlines
8:25 pmDEN
2h 33m
Nonstop
11:58 pmORD

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

United Airlines
1:30 pmORD
5h 45m
TVC · 1h 7m
6:15 pmDEN
United Airlines
8:25 pmDEN
2h 33m
Nonstop
11:58 pmORD

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

United Airlines
9:10 amORD
6h 7m
ASE · 1h 34m
2:17 pmDEN
United Airlines
8:25 pmDEN
2h 33m
Nonstop
11:58 pmORD

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

United Airlines
7:15 amORD
6h
CLE · 1h 4m
12:15 pmDEN
United Airlines
8:25 pmDEN
2h 33m
Nonstop
11:58 pmORD

Round-trip total · 1 adult · Taxes included

Make this trip yours

ORD ⇄ DEN

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Frontier Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-02 → 2026-12-04Frontier AirlinesF91483 / F93174$140.002026-10-29T01:52:52Z
2026-12-02 → 2026-12-04American AirlinesAA1387 / AA506$250.002026-10-29T01:52:52Z
2026-12-02 → 2026-12-04United AirlinesUA2148 / UA1787$270.002026-10-29T01:52:52Z
2026-12-02 → 2026-12-04American AirlinesAA1366 / AA506$250.002026-10-29T01:52:52Z
2026-12-02 → 2026-12-04United AirlinesUA2495 / UA1787$270.002026-10-29T01:52:52Z
2026-12-02 → 2026-12-04United AirlinesUA1758 + UA1029 / UA1787$280.002026-10-29T01:52:52Z
2026-12-02 → 2026-12-04United AirlinesUA5841 + UA514 / UA1787$280.002026-10-29T01:52:52Z
2026-12-02 → 2026-12-04United AirlinesUA4794 + UA5240 / UA1787$280.002026-10-29T01:52:52Z
2026-12-02 → 2026-12-04United AirlinesUA4757 + UA5509 / UA1787$280.002026-10-29T01:52:52Z
2026-12-02 → 2026-12-04United AirlinesUA6033 + UA5774 / UA1787$280.002026-10-29T01:52:52Z
2026-12-02 → 2026-12-04United AirlinesUA1488 + UA1302 / UA1787$280.002026-10-29T01:52:52Z

2026-12-02 → 2026-12-04 · $140.00

  • Frontier Airlines F91483: ORD 2026-12-02 06:30:00 → DEN 2026-12-02 08:26:00; nonstop; 176 minutes. Local airport times.
  • Frontier Airlines F93174: DEN 2026-12-04 21:26:00 → ORD 2026-12-05 00:53:00; nonstop; 147 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $250.00

  • American Airlines AA1387: ORD 2026-12-02 21:05:00 → DEN 2026-12-02 22:54:00; nonstop; 169 minutes. Local airport times.
  • American Airlines AA506: DEN 2026-12-04 18:18:00 → ORD 2026-12-04 21:55:00; nonstop; 157 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $270.00

  • United Airlines UA2148: ORD 2026-12-02 21:00:00 → DEN 2026-12-02 22:44:00; nonstop; 164 minutes. Local airport times.
  • United Airlines UA1787: DEN 2026-12-04 20:25:00 → ORD 2026-12-04 23:58:00; nonstop; 153 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $250.00

  • American Airlines AA1366: ORD 2026-12-02 11:54:00 → DEN 2026-12-02 13:47:00; nonstop; 173 minutes. Local airport times.
  • American Airlines AA506: DEN 2026-12-04 18:18:00 → ORD 2026-12-04 21:55:00; nonstop; 157 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $270.00

  • United Airlines UA2495: ORD 2026-12-02 08:40:00 → DEN 2026-12-02 10:26:00; nonstop; 166 minutes. Local airport times.
  • United Airlines UA1787: DEN 2026-12-04 20:25:00 → ORD 2026-12-04 23:58:00; nonstop; 153 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $280.00

  • United Airlines UA1758 / UA1029: ORD 2026-12-02 05:59:00 → DEN 2026-12-02 10:35:00; 1 stop(s) via MSN; 336 minutes. Local airport times.
    • UA1758: ORD 2026-12-02 05:59:00 → MSN 2026-12-02 07:09:00; layover at MSN: 111 minutes.
    • UA1029: MSN 2026-12-02 09:00:00 → DEN 2026-12-02 10:35:00.
  • United Airlines UA1787: DEN 2026-12-04 20:25:00 → ORD 2026-12-04 23:58:00; nonstop; 153 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $280.00

  • United Airlines UA5841 / UA514: ORD 2026-12-02 12:55:00 → DEN 2026-12-02 16:41:00; 1 stop(s) via CID; 286 minutes. Local airport times.
    • UA5841: ORD 2026-12-02 12:55:00 → CID 2026-12-02 14:16:00; layover at CID: 71 minutes.
    • UA514: CID 2026-12-02 15:27:00 → DEN 2026-12-02 16:41:00.
  • United Airlines UA1787: DEN 2026-12-04 20:25:00 → ORD 2026-12-04 23:58:00; nonstop; 153 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $280.00

  • United Airlines UA4794 / UA5240: ORD 2026-12-02 12:23:00 → DEN 2026-12-02 17:40:00; 1 stop(s) via ICT; 377 minutes. Local airport times.
    • UA4794: ORD 2026-12-02 12:23:00 → ICT 2026-12-02 14:44:00; layover at ICT: 129 minutes.
    • UA5240: ICT 2026-12-02 16:53:00 → DEN 2026-12-02 17:40:00.
  • United Airlines UA1787: DEN 2026-12-04 20:25:00 → ORD 2026-12-04 23:58:00; nonstop; 153 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $280.00

  • United Airlines UA4757 / UA5509: ORD 2026-12-02 13:30:00 → DEN 2026-12-02 18:15:00; 1 stop(s) via TVC; 345 minutes. Local airport times.
    • UA4757: ORD 2026-12-02 13:30:00 → TVC 2026-12-02 15:53:00; layover at TVC: 67 minutes.
    • UA5509: TVC 2026-12-02 17:00:00 → DEN 2026-12-02 18:15:00.
  • United Airlines UA1787: DEN 2026-12-04 20:25:00 → ORD 2026-12-04 23:58:00; nonstop; 153 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $280.00

  • United Airlines UA6033 / UA5774: ORD 2026-12-02 09:10:00 → DEN 2026-12-02 14:17:00; 1 stop(s) via ASE; 367 minutes. Local airport times.
    • UA6033: ORD 2026-12-02 09:10:00 → ASE 2026-12-02 11:36:00; layover at ASE: 94 minutes.
    • UA5774: ASE 2026-12-02 13:10:00 → DEN 2026-12-02 14:17:00.
  • United Airlines UA1787: DEN 2026-12-04 20:25:00 → ORD 2026-12-04 23:58:00; nonstop; 153 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $280.00

  • United Airlines UA1488 / UA1302: ORD 2026-12-02 07:15:00 → DEN 2026-12-02 12:15:00; 1 stop(s) via CLE; 360 minutes. Local airport times.
    • UA1488: ORD 2026-12-02 07:15:00 → CLE 2026-12-02 09:41:00; layover at CLE: 64 minutes.
    • UA1302: CLE 2026-12-02 10:45:00 → DEN 2026-12-02 12:15:00.
  • United Airlines UA1787: DEN 2026-12-04 20:25:00 → ORD 2026-12-04 23:58:00; nonstop; 153 minutes. Local airport times.

More dates for this route