tailodds FORECAST
Tickets
Any day
Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: airlines and hours on this route all land within a few points of 4 in 5 on time.

Nonstops (seasonal or thin)

Nonstop details →
Southwest GRR BWI 1h 40m 81% 0.9% 440 Flying now
Delta GRR BWI – 100%few flights 0.0% 1 Not flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Baltimore on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.
SouthwestDetails → GRR 06:30 → MDW 06:40WN 1894 2h 15m Chicago MDW 08:55 → BWI 11:45WN 1355 5h 15m 100% 90%
DeltaDetails → GRR 06:10 → ATL 08:14DL 2453 2h 56m Atlanta ATL 11:10 → BWI 13:03DL 2711 6h 53m 99% 86%
DeltaDetails → GRR 05:30 → DTW 06:30DL 4885 · flown by Endeavor 3h 40m Detroit DTW 10:10 → BWI 11:47DL 1546 6h 17m 96% 81%
UnitedDetails → GRR 07:15 → ORD 07:28UA 2099 3h 23m Chicago ORD 10:51 → BWI 13:57UA 2653 6h 42m 97% 81%
UnitedDetails → GRR 05:15 → ORD 05:33UA 5615 · flown by SkyWest 57m Chicago ORD 06:30 → BWI 09:27UA 1269 4h 12m 87% 79%
Delta + Frontiertwo ticketsDetails → GRR 08:15 → DTW 09:19DL 3885 · flown by SkyWest 3h 31m Detroit DTW 12:50 → BWI 14:26F9 1516 6h 11m 100% 77%
DeltaDetails → GRR 10:34 → DTW 11:35DL 3500 · flown by SkyWest 3h 34m Detroit DTW 15:09 → BWI 16:45DL 2480 6h 11m 97% 77%
DeltaDetails → GRR 16:10 → MSP 16:51DL 3865 · flown by SkyWest 2h 54m Minneapolis MSP 19:45 → BWI 23:13DL 2918 7h 03m 100% 76%
Tight connection: often missed
UnitedDetails → GRR 08:00 → DEN 08:54UA 2648 52m Denver DEN 09:46 → BWI 15:17UA 1362 7h 17m 73% 64%
AmericanDetails → GRR 19:54 → ORD 20:37AA 4729 · flown by Republic 48m Chicago ORD 21:25 → BWI 00:33 +1AA 4663 · flown by Republic 4h 39m 58% 39%
SouthwestDetails → GRR 18:00 → MDW 18:05WN 1539 55m Chicago MDW 19:00 → BWI 21:55WN 2745 3h 55m 33% 21%

Same layover, different day-part

How often the first flight arrives too late to connect (45 min minimum), for one-ticket layovers of 45–80 minutes.

Morning
ATL · 1h 14m · leaves 07:53 11%
DTW · 51m · leaves 08:15 14%
DEN · 52m · leaves 08:00 27%
Afternoon and evening
DTW · 55m · leaves 19:41 10%
ORD · 48m · leaves 19:54 42%

Delays build through the day, so an afternoon first leg eats the layover. A short connection is fine early in the morning and a gamble later on.

Mixing airlines

One ticketMiss it and the airline rebooks you; bags go through. 45 min is enough.
Separate ticketsMiss it and you buy a new ticket. Re-check bags, clear security again: we require 90 min.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

Regional partners count as the airline that sells them: SkyWest flying Delta Connection is one Delta ticket.

How these are worked out. Makes the connection: share of the last year’s flights where the first flight arrived with at least 45 minutes to spare (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled and arriving within 15 minutes. Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON