Flight Check

Best Airline: PWM to ORD

Portland to Chicago — airline reliability comparison

Republic Airways is the most reliable airline on the PWM to ORD route with a 87% on-time rate, compared to Frontier Airlines at 49%. Based on 1,148 flights tracked.

This route involves weather-prone airports and high-congestion airports, which can affect reliability regardless of airline.

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

Republic Airways87%
82%
United Airlines77%
SkyWest Airlines77%
Frontier Airlines49%

PWM to ORD Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
Republic AirwaysYXBest87%2.5%58m1,148
MQ82%2.7%75m766
United AirlinesUA77%1.5%74m1,336
SkyWest AirlinesOO77%2.9%79m720
Frontier AirlinesF9Worst49%13.3%83m23

Route Overview

80%
Overall On-Time
75m
Avg Delay
2.2%
Cancel Rate
4,103
Total Flights
PWM to ORD Route DetailsReturn: ORD to PWM
PWM AirportORD Airport

Flying out of PWM? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

Free. No account needed.

Data last updated October 2026. Source: Bureau of Transportation Statistics.