Most delayed flights from IAH: every route ranked

64 regularly flown nonstop routes from George Bush Intercontinental Airport, worst on-time record first (Aug 2025 – Jul 2026). Routes with fewer than 360 flights in the period are listed separately.

#	Destination	On time	Cancelled	Avg delay	Airlines	Flights
1	IAH → JFK New York, NY	68%	5.3%	37 min	2	413
2	IAH → BOS Boston, MA	72%	1.5%	23 min	2	2,019
3	IAH → LGA New York, NY	73%	2.9%	23 min	4	4,024
4	IAH → BNA Nashville, TN	73%	0.6%	18 min	3	1,408
5	IAH → PIB Hattiesburg/Laurel, MS	73%	1.0%	21 min	1	627
6	IAH → PNS Pensacola, FL	74%	0.7%	19 min	3	565
7	IAH → VCT Victoria, TX	74%	1.7%	56 min	1	592
8	IAH → SHV Shreveport, LA	75%	1.1%	23 min	1	1,202
9	IAH → EWR Newark, NJ	75%	1.8%	19 min	2	3,769
10	IAH → ASE Aspen, CO	75%	2.7%	24 min	1	624
11	IAH → CVG Cincinnati, KY	75%	0.9%	16 min	3	691
12	IAH → DCA Washington, VA	75%	2.0%	19 min	3	3,279
13	IAH → MEI Meridian, MS	75%	1.0%	26 min	1	627
14	IAH → ORD Chicago, IL	75%	1.6%	22 min	8	6,119
15	IAH → DFW Dallas/Fort Worth, TX	75%	2.5%	25 min	5	5,804
16	IAH → STL St. Louis, MO	75%	0.7%	16 min	2	420
17	IAH → OMA Omaha, NE	76%	0.1%	17 min	2	825
18	IAH → BWI Baltimore, MD	76%	1.4%	16 min	4	1,311
19	IAH → MCI Kansas City, MO	77%	0.4%	14 min	2	486
20	IAH → JAX Jacksonville, FL	77%	0.3%	15 min	2	691
21	IAH → ATL Atlanta, GA	77%	2.0%	16 min	5	4,919
22	IAH → LIT Little Rock, AR	77%	0.5%	17 min	1	651
23	IAH → CMH Columbus, OH	77%	1.0%	15 min	2	522
24	IAH → MFE Mission/McAllen/Edinburg, TX	78%	0.7%	19 min	2	689
25	IAH → SFO San Francisco, CA	78%	0.5%	15 min	1	3,598
26	IAH → MIA Miami, FL	78%	1.1%	21 min	6	3,712
27	IAH → ONT Ontario, CA	78%	0.2%	14 min	2	561
28	IAH → HNL Honolulu, HI	79%	0.5%	11 min	1	365
29	IAH → DTW Detroit, MI	79%	1.1%	16 min	5	2,114
30	IAH → PHL Philadelphia, PA	79%	2.0%	23 min	6	1,848
31	IAH → SEA Seattle, WA	79%	0.4%	12 min	2	2,090
32	IAH → PHX Phoenix, AZ	79%	0.7%	18 min	5	2,960
33	IAH → ABQ Albuquerque, NM	79%	0.8%	11 min	2	473
34	IAH → FLL Fort Lauderdale, FL	79%	1.2%	15 min	4	2,821
35	IAH → MSP Minneapolis, MN	79%	1.0%	19 min	3	1,900
36	IAH → PBI West Palm Beach/Palm Beach, FL	79%	1.0%	13 min	1	492
37	IAH → ICT Wichita, KS	79%	0.9%	15 min	2	561
38	IAH → SMF Sacramento, CA	80%	0.1%	12 min	1	676
39	IAH → AUS Austin, TX	80%	0.7%	14 min	2	2,696
40	IAH → OKC Oklahoma City, OK	80%	1.2%	17 min	2	1,285
41	IAH → MEM Memphis, TN	80%	1.1%	13 min	2	1,088
42	IAH → BTR Baton Rouge, LA	80%	0.7%	13 min	2	438
43	IAH → MAF Midland/Odessa, TX	80%	0.4%	13 min	2	778
44	IAH → IND Indianapolis, IN	80%	0.3%	12 min	1	640
45	IAH → CLT Charlotte, NC	81%	1.9%	21 min	4	2,326
46	IAH → PDX Portland, OR	81%	0.5%	13 min	2	1,227
47	IAH → IAD Washington, VA	81%	0.4%	13 min	1	1,871
48	IAH → CRP Corpus Christi, TX	81%	1.3%	17 min	1	539
49	IAH → SAN San Diego, CA	81%	0.2%	11 min	1	1,696
50	IAH → MCO Orlando, FL	82%	0.9%	15 min	3	3,628
51	IAH → DEN Denver, CO	82%	0.4%	13 min	2	4,715
52	IAH → TPA Tampa, FL	82%	0.5%	13 min	3	1,579
53	IAH → TUL Tulsa, OK	82%	0.4%	12 min	2	1,087
54	IAH → LAS Las Vegas, NV	82%	0.9%	13 min	3	3,430
55	IAH → PIT Pittsburgh, PA	82%	0.1%	11 min	2	774
56	IAH → SAT San Antonio, TX	83%	0.4%	11 min	2	2,406
57	IAH → RDU Raleigh/Durham, NC	83%	1.2%	13 min	3	924
58	IAH → SJU San Juan, PR	83%	0.5%	9 min	2	928
59	IAH → SLC Salt Lake City, UT	83%	0.5%	14 min	3	1,949
60	IAH → MSY New Orleans, LA	84%	0.2%	11 min	4	2,930
61	IAH → LAX Los Angeles, CA	84%	0.5%	11 min	6	5,220
62	IAH → RSW Fort Myers, FL	85%	0.1%	10 min	1	874
63	IAH → CLE Cleveland, OH	85%	0.2%	9 min	1	825
64	IAH → SNA Santa Ana, CA	88%	0.0%	6 min	1	1,092

Less frequent routes

Too few flights for a reliable ranking.

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.