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View New & Used Keystone RVs for Sale in or near Middletown, Delaware

146 listings match your search

Research Specs for Keystone
Used 2017 Keystone Hideout 299RLDS available in Milford, Delaware
20

Used 2017 Keystone Hideout 299RLDS

Used Fifth Wheel in Milford, Delaware 19963

For Sale by Delmarva RV Center

2017 HIDEOUT BY KEYSTONE 299RLDS   POWER AWNING 2 SLIDES DUCTED ROOF A/C SLEEPS 4 FRONT BEDROOM SIDE BATHROOM DOUBLE DOOR REFRIGERATOR WE WANT YOUR BUSINESS FOLKS!! WE TAKE ALL TYPES OF TRADES!! WE CAN PROVIDE FAST AND EASY FINANCING!! CALL OR EMAIL N ...

  • Sale
  • In Stock
  • New Arrival
  • Recent Trade-In

$15,900

New 2025 Keystone Passport 2450RK available in Elizabethtown, Pennsylvania
26

New 2025 Keystone Passport 2450RK

New Travel Trailer in Elizabethtown, Pennsylvania 17022

For Sale by General RV Center

Experience the perfect blend of comfort and convenience with the 2025 Keystone Passport SL 2450RK. This RV is designed for those who love to travel in style while enjoying all the comforts of home. The rear kitchen layout is a culinary enthusiast's dream, ...

  • Sale

$29,999

Used 2014 Keystone Montana High Country 338DB available in Elizabethtown, Pennsylvania
37

Used 2014 Keystone Montana High Country 338DB

Used Fifth Wheel in Elizabethtown, Pennsylvania 17022

For Sale by General RV Center

The perfect Montana High Country model for a larger family to enjoy is this 338DB. With triple slides, a bunkhouse for the kids, and a exterior kitchen with bumper mount grill, you will have everything you need to enjoy spending time away from home! Before ...

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Used 2023 Keystone Montana 3931FB available in Milford North, Delaware
30

Used 2023 Keystone Montana 3931FB

Used Fifth Wheel in Milford North, Delaware 19963

For Sale by Delmarva RV Center (Milford North)

2023 MONTANA BY KEYSTONE 3931FB   POWER AWNING 3 SLIDES DRY WEIGHT 13680LB DUCTED ROOF A/C SLEEPS 4 FRONT BEDROOM REAR BATHROOM BATH AND A HALF LARGE REFRIGERATOR PANTRY FLATSCREEN TV  FIREPLACE CENTER ISLAND  WE WANT YOUR BUSINESS FOLKS!! W ...

  • Sale
  • In Stock
  • New Arrival

$69,995

Used 2017 Keystone Cougar X-Lite 28RLS available in Willow Street, Pennsylvania
24

Used 2017 Keystone Cougar X-Lite 28RLS

Used Travel Trailer in Willow Street, Pennsylvania 17584

For Sale by RV Value Mart - Willow Street

If you have been looking for dual entry and a walk-through bath in a travel trailer then take a step inside this rear living Cougar X-Lite travel trailer 28RLS offering plenty of space with a large slide, and many more comforts of home.As you enter the mai ...

  • Sale

$18,778

New 2026 Keystone Cougar Half-Ton 22RBS available in Milford North, Delaware
19

New 2026 Keystone Cougar Half-Ton 22RBS

New Travel Trailer in Milford North, Delaware 19963

For Sale by Delmarva RV Center (Milford North)

2026 COUGAR HALF-TON BY KEYSTONE MODEL 22RBS   POWER AWNING  ONE SLIDE DRY WEIGHT 5840LBS 30 AMP POWER SUPPLY DUCTED ROOF A/C SLEEPS 2 RECLINING SEATS CORNER BATHROOM FLATSCREEN TV  DOUBLE DOOR REFRIGERATOR       WE WANT YOUR ...

  • Sale
  • In Stock
  • New Arrival

$39,995

Used 2018 Keystone Montana 3721RL Rear Living Triple Slide, Washer/Dryer available in Williamstown, New Jersey
58

Used 2018 Keystone Montana 3721RL Rear Living Triple Slide, Washer/Dryer

Used Fifth Wheel in Williamstown, New Jersey 08094

For Sale by White Horse RV Center

Choosing White Horse RV Center means more than just buying an RV; it’s about investing in a seamless, enjoyable experience. With over 50 years of expertise, we ensure your RV journey is fun and hassle-free. Our RV Essentials Package and transparent p ...

  • Sale
  • Blow Out Price
  • Special
  • Reduced

$39,995

New 2026 Keystone Passport 2600FK available in Elizabethtown, Pennsylvania
29

New 2026 Keystone Passport 2600FK

New Travel Trailer in Elizabethtown, Pennsylvania 17022

For Sale by General RV Center

Discover the 2026 Keystone Passport Classic 2600FK, a travel trailer designed to elevate your camping experience. With a spacious floorplan that comfortably sleeps six, it's perfect for family adventures or a getaway with friends. The front kitchen layout ...

  • Sale

$43,944

Used 2021 Keystone Cougar Half-Ton 25DBSWE available in Milford North, Delaware
18

Used 2021 Keystone Cougar Half-Ton 25DBSWE

Used Travel Trailer in Milford North, Delaware 19963

For Sale by Delmarva RV Center (Milford North)

2021 COUGAR HALF TON KEYSTONE  25DBSWE   DRY WEIGHT 6110LBS POWER AWNING OUTSIDE KITCHEN ONE SLIDE SLEEPS 8 FRONT BEDROOM CORNER BATHROOM BUNKS  U SHAPED DINETTE FLATSCREEN TV  DOUBLE DOOR REFRIGERATOR   WE WANT YOUR BUSINESS FOLKS ...

  • Sale
  • In Stock
  • New Arrival
  • Recent Trade-In

$25,900

Used 2015 Keystone Outback 315FRE available in Willow Street, Pennsylvania
24

Used 2015 Keystone Outback 315FRE

Used Fifth Wheel in Willow Street, Pennsylvania 17584

For Sale by RV Value Mart - Willow Street

This rear entertainment, triple slide, Outback fifth wheel 315FRE by Keystone RV, will have you and your family enjoying all of your outdoor adventures. When you enter you will see a corner refrigerator with dual pantries, one on either side. There is an L ...

  • Sale

$14,883

Used 2025 Keystone Cougar Half-Ton 25RDS available in Milford, Delaware
18

Used 2025 Keystone Cougar Half-Ton 25RDS

Used Travel Trailer in Milford, Delaware 19963

For Sale by Delmarva RV Center

2025 COUGAR KEYSTONE 25RDS   POWER AWNING ONE SLIDE DRY WEIGHT 6490LBS SLEEPS 4 FRONT BEDROOM WALKTHROUGH BATHROOM U SHAPED DINETTE FLATSCREEN TV  DOUBLE DOOR REFRIGERATOR   WE WANT YOUR BUSINESS FOLKS!! WE TAKE ALL TYPES OF TRADES!! WE CAN ...

  • Sale
  • In Stock
  • New Arrival
  • Recent Trade-In

$29,900

Used 2023 Keystone Cougar Half-Ton 23MLE available in Milford, Delaware
19

Used 2023 Keystone Cougar Half-Ton 23MLE

Used Fifth Wheel in Milford, Delaware 19963

For Sale by Delmarva RV Center

2023 COUGAR HALF TON BY KEYSTONE 23MLE   POWER AWNING DRY WEIGHT 7820LBS ONE SLIDE DUCTED ROOF A/C SLEEPS 4 OUTSIDE REFRIGERATOR PANTRY DINETTE DOUBLE DOOR REFRIGERATOR FLATSCREEN TV  FRONT BEDROOM  SIDE BATHROOM   WE WANT YOUR BUSINESS ...

  • Sale
  • In Stock
  • Recent Trade-In
  • Reduced

$29,900

Used 2020 Keystone Hideout Single Axle 176LHS available in Willow Street, Pennsylvania
24

Used 2020 Keystone Hideout Single Axle 176LHS

Used Travel Trailer in Willow Street, Pennsylvania 17584

For Sale by RV Value Mart - Willow Street

Keystone Hideout Single Axle travel trailer 176LHS highlights: Bunk Beds Single Slide Pass-Through Storage Exterior Speakers 38" Walk-In Shower This Single Axle Hideout travel trailer is a great way for your family to get away and enjoy all that nature has ...

  • Sale

$10,978

Used 2021 Keystone Springdale Classic 1750RD available in Newfield, New Jersey
20

Used 2021 Keystone Springdale Classic 1750RD

Used Travel Trailer in Newfield, New Jersey 08344

For Sale by Crossroads Trailer Sales, Inc.

2021 Towable Travel Trailer - 21 feet 5 inches Long, 8 feet Wide, Sleeps 5OverviewDiscover a fresh arrival in the world of recreational vehicles with this 2021 towable travel trailer. Designed for easy towing and versatile camping, it offers a compact foot ...

  • Sale
  • In Stock
  • New Arrival
  • Recent Trade-In

$10,500

New 2026 Keystone Cougar Half-Ton 23MLE available in Milford, Delaware
20

New 2026 Keystone Cougar Half-Ton 23MLE

New Fifth Wheel in Milford, Delaware 19963

For Sale by Delmarva RV Center

2026 COUGAR BY KEYSTONE MODEL 23MLE   POWER AWNING DRY WEIGHT 7820LB 2 SLIDES OUTSIDE REFRIGERATOR SLEEPS 4 FRONT BEDROOM SIDE BATHROOM DINETTE DOUBLE DOOR REFRIGERATOR FLATSCREEN TV   WE WANT YOUR BUSINESS FOLKS!! WE TAKE ALL TYPES OF TRADES!! W ...

  • Sale
  • In Stock
  • New Arrival

$45,900

New 2026 Keystone Cougar Half-Ton 29MBD available in Milford North, Delaware
22

New 2026 Keystone Cougar Half-Ton 29MBD

New Fifth Wheel in Milford North, Delaware 19963

For Sale by Delmarva RV Center (Milford North)

2026 COUGAR HALF TON BY KEYSTONE 29MBD   POWER AWNING 2 SLIDES DRY WEIGHT 9420LBS SLEEPS 7 FRONT BEDROOM SIDE BATHROOM SIDE BUNK ROOM DINETTE FLATSCREEN TV DOUBLE DOOR REFRIGERATOR   WE WANT YOUR BUSINESS FOLKS!! WE TAKE ALL TYPES OF TRADES!! WE ...

  • Sale
  • In Stock
  • New Arrival

$56,950

Used 2021 Keystone Fuzion 373 available in Milford, Delaware
26

Used 2021 Keystone Fuzion 373

Used Toy Hauler in Milford, Delaware 19963

For Sale by Delmarva RV Center

2021 FUZION BY KEYSTONE 373   POWER AWNING 3 SLIDES DRY WEIGHT 14,460LBS FRONT AND REAR ENTRY DOORS DUCTED ROOF A/C SLEEPS 8 FRONT BEDROOM SIDE BATHROOM BATH AND  A HALF FIREPLACE 2 FLATSCREEN TV'S  LARGE SIDE BY SIDE REFRIGERATOR LOFT AREA ...

  • Sale
  • In Stock
  • New Arrival
  • Recent Trade-In

$59,900

Used 2017 Keystone Montana High Country 375FL available in Willow Street, Pennsylvania
31

Used 2017 Keystone Montana High Country 375FL

Used Fifth Wheel in Willow Street, Pennsylvania 17584

For Sale by RV Value Mart - Willow Street

Step up to the front living space in this Keystone Montana High Country 375FL fifth wheel and you will find plenty of seating, and even sleeping space for overnight guests with two hide-a-bed sofas. There is one on either side that slides out maximizing th ...

  • Sale

$28,883

Used 2017 Keystone Cougar XLite 29RES available in Milford, Delaware
20

Used 2017 Keystone Cougar XLite 29RES

Used Fifth Wheel in Milford, Delaware 19963

For Sale by Delmarva RV Center

2017 COUGAR BY KEYSTONE 29RES   POWER AWNING 3 SLIDES DRY WEIGHT 8020LBS DUCTED ROOF A/C SLEEPS 4 FRONT BEDROOM SIDE BATHROOM FLATSCREEN TV FIREPLACE DOUBLE DOOR REFRIGERATOR   WE WANT YOUR BUSINESS FOLKS!! WE TAKE ALL TYPES OF TRADES!! WE CAN PR ...

  • Sale
  • In Stock
  • New Arrival
  • Recent Trade-In

$19,900

New 2026 Keystone Passport 180RBC available in Elizabethtown, Pennsylvania
23

New 2026 Keystone Passport 180RBC

New Travel Trailer in Elizabethtown, Pennsylvania 17022

For Sale by General RV Center

The 2026 Keystone Passport Classic 180RBC is your ticket to adventure, offering a cozy and efficient space for travelers. This thoughtfully designed RV features a comfortable jackknife sofa that easily converts into extra sleeping space, perfect for accomm ...

  • Sale

$24,999

New 2026 Keystone Cougar 360MBI available in Milford North, Delaware
28

New 2026 Keystone Cougar 360MBI

New Fifth Wheel in Milford North, Delaware 19963

For Sale by Delmarva RV Center (Milford North)

2026 COUGAR 1776 EDITION BY KEYSTONE MODEL 360MBI NOW THIS FIFTH WHEEL IS AS PATRIOTIC AS IT GETS!!! AMERICAN RV'ING AT IT'S FINEST!!!      2 POWER AWNINGS 4 SLIDES DRY WEIGHT 12580LBS DUCTED ROOF A/C SLEEPS 10 FRONT BEDROOM SIDE BATHROOM UP ...

  • Sale
  • In Stock
  • Reduced

$79,900

New 2026 Keystone Cougar Sport 2700BH available in Milford North, Delaware
18

New 2026 Keystone Cougar Sport 2700BH

New Fifth Wheel in Milford North, Delaware 19963

For Sale by Delmarva RV Center (Milford North)

2026 COUGAR SPORT BY KEYSTONE 2700BH   POWER AWNING ONE SLIDE DRY WEIGHT 7650LBS DUCTED ROOF A/C SLEEPS 10 FRONT BEDROOM SIDE BATHROOM U SHAPED DINETTE BUNKS DOUBLE DOOR REFRIGERATOR FLATSCREEN TV    WE WANT YOUR BUSINESS FOLKS!! WE TAKE ALL ...

  • Sale
  • In Stock
  • New Arrival

$44,995

New 2026 Keystone Cougar Half-Ton 26LBW available in Milford North, Delaware
20

New 2026 Keystone Cougar Half-Ton 26LBW

New Travel Trailer in Milford North, Delaware 19963

For Sale by Delmarva RV Center (Milford North)

2026 COUGAR HALF TON BY KEYSTONE 26LBW   POWER AWNING DRY WEIGHT 7180LBS ONE SLIDE DUCTED ROOF A/C SLEEPS 4 FRONT BEDROOM REAR BATHROOM DINETTE FLATSCREEN TV FIREPLACE PANTRY WASHER DRYER PREP DOUBLE DOOR REFRIGERATOR   WE WANT YOUR BUSINESS FOLK ...

  • Sale
  • In Stock
  • New Arrival

$44,995

Used 2018 Keystone Cougar 338RLK available in Williamstown, New Jersey
56

Used 2018 Keystone Cougar 338RLK

Used Fifth Wheel in Williamstown, New Jersey 08094

For Sale by White Horse RV Center

Choosing White Horse RV Center means more than just buying an RV; it’s about investing in a seamless, enjoyable experience. With over 50 years of expertise, we ensure your RV journey is fun and hassle-free. Our RV Essentials Package and transparent p ...

  • Sale
  • Special

$25,995

Find your perfect Keystone rv for sale from the search results below. Contact a member to gain further information. Let our member network help you find your dream unit so you can further enjoy the rv lifestyle!
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