All routes to and from SEA

Seattle-Tacoma International Airport’s own profile links its busiest, most and least reliable routes only. This is the complete set: every directional route touching SEA with enough history to clear FlyerIntel’s publishing bar, July 2023 – June 2026.

Routes from SEA

43 directional routes with SEA as the origin, ordered by flights operated.

Routes from SEA
#	Route	Flights	On time	Score
1	SEA → LAX Los Angeles	22,513	82.8%	79
2	SEA → PHX Phoenix	21,750	79.7%	76
3	SEA → ANC Anchorage	21,642	75.8%	71
4	SEA → SFO San Francisco	20,106	69.9%	55
5	SEA → DEN Denver	19,613	78.3%	70
6	SEA → LAS Las Vegas	18,738	77.7%	71
7	SEA → ORD Chicago	15,693	77.6%	67
8	SEA → PDX Portland	15,623	80.8%	78
9	SEA → DFW Dallas–Fort Worth	15,129	76.4%	61
10	SEA → SAN San Diego	13,860	79.0%	74
11	SEA → SJC San Jose	13,449	81.7%	78
12	SEA → SMF Sacramento	12,695	80.1%	78
13	SEA → SNA Santa Ana	12,098	85.6%	84
14	SEA → SLC Salt Lake City	11,934	83.7%	82
15	SEA → ATL Atlanta	10,247	82.0%	76
16	SEA → JFK New York	8,844	74.9%	60
17	SEA → HNL Honolulu	8,839	71.5%	60
18	SEA → MSP Minneapolis	8,050	85.8%	86
19	SEA → BOS Boston	7,585	75.5%	65
20	SEA → ONT Ontario	7,500	82.3%	78
21	SEA → OAK Oakland	6,413	74.3%	67
22	SEA → IAD Washington	6,313	81.3%	74
23	SEA → IAH Houston	6,298	79.3%	71
24	SEA → DTW Detroit	6,200	85.4%	85
25	SEA → AUS Austin	6,188	77.6%	71
26	SEA → EWR Newark	6,154	79.5%	66
27	SEA → MCO Orlando	5,575	80.7%	75
28	SEA → BUR Burbank	4,748	77.3%	68
29	SEA → BNA Nashville	4,102	78.5%	77
30	SEA → CLT Charlotte	3,872	84.6%	73
31	SEA → MCI Kansas City	3,457	78.5%	72
32	SEA → PHL Philadelphia	3,431	75.8%	67
33	SEA → TUS Tucson	3,187	80.5%	80
34	SEA → TPA Tampa	3,077	77.2%	71
35	SEA → MIA Miami	2,899	78.0%	71
36	SEA → RDU Raleigh–Durham	2,695	80.6%	79
37	SEA → FLL Fort Lauderdale	2,650	81.4%	75
38	SEA → STL St. Louis	2,593	77.9%	77
39	SEA → MDW Chicago	1,765	79.8%	81
40	SEA → SAT San Antonio	1,721	76.4%	75
41	SEA → ABQ Albuquerque	1,492	74.6%	73
42	SEA → OMA Omaha	1,418	80.5%	80
43	SEA → PIT Pittsburgh	1,339	78.3%	76

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026

Routes to SEA

45 directional routes with SEA as the destination, ordered by flights operated.

Routes to SEA
#	Route	Flights	On time	Score
1	LAX → SEA Los Angeles	22,509	85.0%	82
2	PHX → SEA Phoenix	21,737	82.8%	80
3	ANC → SEA Anchorage	21,631	84.9%	82
4	SFO → SEA San Francisco	20,101	76.4%	67
5	DEN → SEA Denver	19,612	74.9%	65
6	LAS → SEA Las Vegas	18,723	80.1%	74
7	PDX → SEA Portland	15,990	86.0%	83
8	ORD → SEA Chicago	15,703	74.3%	62
9	DFW → SEA Dallas–Fort Worth	15,128	71.4%	52
10	SAN → SEA San Diego	13,862	81.7%	73
11	SJC → SEA San Jose	13,461	84.1%	82
12	SMF → SEA Sacramento	12,621	82.7%	83
13	SNA → SEA Santa Ana	12,090	85.7%	81
14	SLC → SEA Salt Lake City	11,934	81.0%	79
15	ATL → SEA Atlanta	10,247	80.4%	76
16	HNL → SEA Honolulu	8,847	79.1%	71
17	JFK → SEA New York	8,844	76.7%	62
18	MSP → SEA Minneapolis	8,053	84.2%	83
19	BOS → SEA Boston	7,588	75.9%	66
20	ONT → SEA Ontario	7,496	86.5%	82
21	OAK → SEA Oakland	6,410	78.8%	75
22	IAD → SEA Washington	6,309	79.3%	69
23	IAH → SEA Houston	6,298	77.2%	65
24	DTW → SEA Detroit	6,207	80.5%	77
25	AUS → SEA Austin	6,186	82.6%	74
26	EWR → SEA Newark	6,154	74.3%	55
27	MCO → SEA Orlando	5,576	77.7%	65
28	BUR → SEA Burbank	4,743	81.4%	72
29	BNA → SEA Nashville	4,102	79.0%	74
30	CLT → SEA Charlotte	3,876	69.3%	49
31	MCI → SEA Kansas City	3,457	84.3%	79
32	TUS → SEA Tucson	3,186	83.6%	81
33	TPA → SEA Tampa	3,075	73.8%	62
34	MIA → SEA Miami	2,901	67.9%	47
35	RDU → SEA Raleigh–Durham	2,695	79.3%	73
36	FLL → SEA Fort Lauderdale	2,652	72.5%	55
37	STL → SEA St. Louis	2,594	79.8%	76
38	MSY → SEA New Orleans	2,023	75.8%	68
39	MDW → SEA Chicago	1,782	66.1%	57
40	SAT → SEA San Antonio	1,721	73.6%	68
41	ABQ → SEA Albuquerque	1,491	80.3%	79
42	OMA → SEA Omaha	1,417	84.6%	83
43	PIT → SEA Pittsburgh	1,415	76.9%	67
44	MKE → SEA Milwaukee	1,401	84.3%	87
45	DAL → SEA Dallas	1,003	77.6%	72

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026

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Analysis last recomputed September 15, 2026