domestic · 3h 40m · 2,621 km
Denver to New York (LGA)
3 airlines · 3 aircraft ranked
In economy, United's Economy (737-900ER) edges out the field with a 4.2/10.In first class, United's United First (737-900ER) edges out the field with a 2.8/10.
Quick pick
Fly United. It scores higher across seat comfort and amenities.
If prices are similar, go with this one.
Fly United. It has a bigger screen (13" vs 9").
If fares are comparable, this is the better cabin.
Select two airlines to compare head-to-head
Data verified June 2026
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Airlines on this route
Same corridor, nearby airports
Flying with family
- Seatback screens on United, Delta. Southwest: bring your own device.
- Most legroom: Southwest (32"). Least: Delta (30"). That 2" difference matters with kids.
Route insights
- In economy, United's Economy (737-900ER) edges out the field with a 4.2/10.
- In first class, United's United First (737-900ER) edges out the field with a 2.8/10.
Frequently asked
Which is better in economy: United or Southwest on DEN-LGA?
Economy (United Airlines, 737-900ER) edges out Economy (open seating) (Southwest Airlines, 737-800) in economy, scoring 4.2/10 vs 3.9. The deciding factor: AC + USB-C vs USB-A only. Southwest Airlines fights back on legroom and seat width.
Which is better in first: United or Delta on DEN-LGA?
United First (United Airlines, 737-900ER) and Delta First Class (Delta Air Lines, 737-900ER) score virtually the same in first: 2.8 vs 2.8/10. The biggest gap is entertainment — a 13" screen vs 9" screen — but neither carrier pulls ahead overall.
Which is better in economy: United or Delta on DEN-LGA?
Economy (United Airlines, 737-900ER) edges out Main Cabin (Delta Air Lines, 737-900ER) in economy, scoring 4.2/10 vs 3.5. The deciding factor: AC + USB-C vs USB-A only. Delta Air Lines fights back on seat width.
Which is better in economy: Southwest or Delta on DEN-LGA?
Economy (open seating) (Southwest Airlines, 737-800) edges out Main Cabin (Delta Air Lines, 737-900ER) in economy, scoring 3.9/10 vs 3.5. The deciding factor: 32" of pitch vs 30". Delta Air Lines fights back on entertainment.
What are the best seats in United United First on DEN-LGA?
Best: Row 1 has the most legroom as a bulkhead. 1A and 1F offer the most privacy with the wall on one side. Row 2 is the sweet spot between legroom and storage (bulkhead rows lack under-seat storage). Avoid: Row 5 seats 5A/5B do not recline; 5E/5F have roughly half the recline of other First rows. This is the biggest seat trap on the 737-900ER. Signature Interior with Collins Aerospace Pinnacle seats, 13-inch HD seatback touchscreens with Bluetooth audio, USB-A and USB-C at every seat plus AC outlet. Complimentary meal service on flights over 800 miles; snack basket on shorter flights. ViaSat Ka-band WiFi free for MileagePlus members. Starlink awaiting FAA certification for 737-900ER, expected during 2026. Majority of fleet retrofitted to Signature Interior; some older aircraft remain.
What are the best seats in United Economy on DEN-LGA?
Best: Exit row 21 has 38.8 inches of pitch — more than First Class. The 2-seat side rows 20-21 are the best economy seats on the plane. Rows 7-14 are Economy Plus with 33-34-inch pitch. Avoid: Last row (row 33) has severely limited or no recline due to the rear lavatory wall. Rows 32-33 experience galley noise and lavatory traffic. Middle seats (B, E) in any row are the tightest at 30-inch pitch. Signature Interior with 10-inch HD seatback touchscreens and Bluetooth audio. USB-A and USB-C at every seat plus shared AC outlets. ViaSat Ka-band WiFi free for MileagePlus members. 42 Economy Plus seats in rows 7-14 have 33-34-inch pitch; 117 standard Economy seats have 30-inch pitch. Three sub-variants exist (39/42/45 Economy Plus seats); Version 2 with 42 E+ is most common (~84 of ~99 aircraft).
What are the best seats in Southwest Economy (open seating) on DEN-LGA?
Best: 16A and 16F have the most legroom (no seat in front, behind exit row). Row 12 exit row seats also have extra legroom. Avoid: Last row (row 29) is narrower, restricted recline, near galley/lavatory noise. Seats 10A, 11A, 11F lack windows. Single-class cabin. Assigned seating launched Jan 2026. Extra legroom rows at front have ~34 inch pitch. Older 737-800s lack power outlets; newer retrofits have USB-A and USB-C in seatbacks. Streaming entertainment via personal devices only. Exit row seats on the 737 offer extra legroom but do not recline. The row immediately before the exit also has limited recline due to clearance requirements.
What are the best seats in Delta Delta First Class on DEN-LGA?
Best: Row 1 bulkhead has the most legroom. 1A and 1D for window-seat privacy. Avoid: Row 5 is closest to the Comfort+ cabin. B and C seats are more exposed. Pre-retrofit 737-900ER with older recliner seats. Smaller 9-inch seatback IFE screens. AC outlet and USB-A at every seat. Delta Sync free WiFi. Same meal service as other domestic First Class.
What are the best seats in Delta Main Cabin on DEN-LGA?
Best: Comfort+ rows 10-14 (27 seats) offer 33-34 inches of pitch with complimentary beer/wine/spirits. Row 10 bulkhead for the most legroom. Avoid: Last rows near rear lavatory. Middle seats (B, E) throughout. Row 37 does not recline. 27 Comfort+ seats in rows 10-14 with 33-34-inch pitch; 133 Main Cabin seats in rows 15-37 with 30-31 inches. Older slimline seats with 9-inch seatback screens. USB-A at most seats; AC outlets inconsistent — some rows have them, others do not. Delta Sync free WiFi. Some 737-900ER sub-variants (73J, 73R) may lack seatback IFE or WiFi.